diff --git a/generator/src/main/resources/line-bot-sdk-ruby-generator/api.pebble b/generator/src/main/resources/line-bot-sdk-ruby-generator/api.pebble
index 2776922c..8da113b0 100644
--- a/generator/src/main/resources/line-bot-sdk-ruby-generator/api.pebble
+++ b/generator/src/main/resources/line-bot-sdk-ruby-generator/api.pebble
@@ -73,7 +73,7 @@ module Line
               headers: header_params{% endif %}
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    {%- for response in op.responses %}
                    when {{ response.code }}
                      {%- if response.content['application/json'].schema.complexType != null %}
@@ -89,7 +89,7 @@ module Line
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # {{ op.notes }}
@@ -113,12 +113,12 @@ module Line
             {{param.paramName}}:{{ param.required ? '' : ' nil' }}{{ loop.last ? '' : ',' -}}
             {% endfor %}
           )
-            body, _status_code, _headers = {{op.nickname}}_with_http_info({% for param in op.allParams %}
+            response_body, _status_code, _headers = {{op.nickname}}_with_http_info({% for param in op.allParams %}
               {{param.paramName}}: {{param.paramName}}{{ loop.last ? '' : ',' -}}
             {% endfor %}
             )
 
-            body
+            response_body
           end{% endfor %}
         end
       end
diff --git a/lib/line/bot/v2/channel_access_token/api/channel_access_token_client.rb b/lib/line/bot/v2/channel_access_token/api/channel_access_token_client.rb
index 801ba05e..860a65bd 100644
--- a/lib/line/bot/v2/channel_access_token/api/channel_access_token_client.rb
+++ b/lib/line/bot/v2/channel_access_token/api/channel_access_token_client.rb
@@ -45,7 +45,7 @@ def gets_all_valid_channel_access_token_key_ids_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -56,7 +56,7 @@ def gets_all_valid_channel_access_token_key_ids_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets all valid channel access token key IDs.
@@ -68,12 +68,12 @@ def gets_all_valid_channel_access_token_key_ids(
             client_assertion_type:,
             client_assertion:
           )
-            body, _status_code, _headers = gets_all_valid_channel_access_token_key_ids_with_http_info(
+            response_body, _status_code, _headers = gets_all_valid_channel_access_token_key_ids_with_http_info(
               client_assertion_type: client_assertion_type,
               client_assertion: client_assertion
             )
 
-            body
+            response_body
           end
 
           # Issue short-lived channel access token
@@ -100,7 +100,7 @@ def issue_channel_token_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -117,7 +117,7 @@ def issue_channel_token_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Issue short-lived channel access token
@@ -131,13 +131,13 @@ def issue_channel_token(
             client_id:,
             client_secret:
           )
-            body, _status_code, _headers = issue_channel_token_with_http_info(
+            response_body, _status_code, _headers = issue_channel_token_with_http_info(
               grant_type: grant_type,
               client_id: client_id,
               client_secret: client_secret
             )
 
-            body
+            response_body
           end
 
           # Issues a channel access token that allows you to specify a desired expiration date. This method lets you use JWT assertion for authentication.
@@ -164,7 +164,7 @@ def issue_channel_token_by_jwt_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -175,7 +175,7 @@ def issue_channel_token_by_jwt_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Issues a channel access token that allows you to specify a desired expiration date. This method lets you use JWT assertion for authentication.
@@ -189,13 +189,13 @@ def issue_channel_token_by_jwt(
             client_assertion_type:,
             client_assertion:
           )
-            body, _status_code, _headers = issue_channel_token_by_jwt_with_http_info(
+            response_body, _status_code, _headers = issue_channel_token_by_jwt_with_http_info(
               grant_type: grant_type,
               client_assertion_type: client_assertion_type,
               client_assertion: client_assertion
             )
 
-            body
+            response_body
           end
 
           # Issues a new stateless channel access token, which doesn't have max active token limit unlike the other token types. The newly issued token is only valid for 15 minutes but can not be revoked until it naturally expires. 
@@ -228,7 +228,7 @@ def issue_stateless_channel_token_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -239,7 +239,7 @@ def issue_stateless_channel_token_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Issues a new stateless channel access token, which doesn't have max active token limit unlike the other token types. The newly issued token is only valid for 15 minutes but can not be revoked until it naturally expires. 
@@ -257,7 +257,7 @@ def issue_stateless_channel_token(
             client_id: nil,
             client_secret: nil
           )
-            body, _status_code, _headers = issue_stateless_channel_token_with_http_info(
+            response_body, _status_code, _headers = issue_stateless_channel_token_with_http_info(
               grant_type: grant_type,
               client_assertion_type: client_assertion_type,
               client_assertion: client_assertion,
@@ -265,7 +265,7 @@ def issue_stateless_channel_token(
               client_secret: client_secret
             )
 
-            body
+            response_body
           end
 
           # Revoke short-lived or long-lived channel access token
@@ -286,14 +286,14 @@ def revoke_channel_token_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Revoke short-lived or long-lived channel access token
@@ -303,11 +303,11 @@ def revoke_channel_token_with_http_info(
           def revoke_channel_token(
             access_token:
           )
-            body, _status_code, _headers = revoke_channel_token_with_http_info(
+            response_body, _status_code, _headers = revoke_channel_token_with_http_info(
               access_token: access_token
             )
 
-            body
+            response_body
           end
 
           # Revoke channel access token v2.1
@@ -334,14 +334,14 @@ def revoke_channel_token_by_jwt_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Revoke channel access token v2.1
@@ -355,13 +355,13 @@ def revoke_channel_token_by_jwt(
             client_secret:,
             access_token:
           )
-            body, _status_code, _headers = revoke_channel_token_by_jwt_with_http_info(
+            response_body, _status_code, _headers = revoke_channel_token_by_jwt_with_http_info(
               client_id: client_id,
               client_secret: client_secret,
               access_token: access_token
             )
 
-            body
+            response_body
           end
 
           # Verify the validity of short-lived and long-lived channel access tokens
@@ -382,7 +382,7 @@ def verify_channel_token_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -393,7 +393,7 @@ def verify_channel_token_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Verify the validity of short-lived and long-lived channel access tokens
@@ -403,11 +403,11 @@ def verify_channel_token_with_http_info(
           def verify_channel_token(
             access_token:
           )
-            body, _status_code, _headers = verify_channel_token_with_http_info(
+            response_body, _status_code, _headers = verify_channel_token_with_http_info(
               access_token: access_token
             )
 
-            body
+            response_body
           end
 
           # You can verify whether a Channel access token with a user-specified expiration (Channel Access Token v2.1) is valid.
@@ -427,7 +427,7 @@ def verify_channel_token_by_jwt_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -438,7 +438,7 @@ def verify_channel_token_by_jwt_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # You can verify whether a Channel access token with a user-specified expiration (Channel Access Token v2.1) is valid.
@@ -448,11 +448,11 @@ def verify_channel_token_by_jwt_with_http_info(
           def verify_channel_token_by_jwt(
             access_token:
           )
-            body, _status_code, _headers = verify_channel_token_by_jwt_with_http_info(
+            response_body, _status_code, _headers = verify_channel_token_by_jwt_with_http_info(
               access_token: access_token
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/insight/api/insight_client.rb b/lib/line/bot/v2/insight/api/insight_client.rb
index 79f5f484..a91ab20a 100644
--- a/lib/line/bot/v2/insight/api/insight_client.rb
+++ b/lib/line/bot/v2/insight/api/insight_client.rb
@@ -39,7 +39,7 @@ def get_friends_demographics_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -50,7 +50,7 @@ def get_friends_demographics_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Retrieves the demographic attributes for a LINE Official Account's friends.You can only retrieve information about friends for LINE Official Accounts created by users in Japan (JP), Thailand (TH), Taiwan (TW) and Indonesia (ID). 
@@ -58,10 +58,10 @@ def get_friends_demographics_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-demographic
           def get_friends_demographics(
           )
-            body, _status_code, _headers = get_friends_demographics_with_http_info(
+            response_body, _status_code, _headers = get_friends_demographics_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Returns statistics about how users interact with narrowcast messages or broadcast messages sent from your LINE Official Account. 
@@ -82,7 +82,7 @@ def get_message_event_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -93,7 +93,7 @@ def get_message_event_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Returns statistics about how users interact with narrowcast messages or broadcast messages sent from your LINE Official Account. 
@@ -104,11 +104,11 @@ def get_message_event_with_http_info(
           def get_message_event(
             request_id:
           )
-            body, _status_code, _headers = get_message_event_with_http_info(
+            response_body, _status_code, _headers = get_message_event_with_http_info(
               request_id: request_id
             )
 
-            body
+            response_body
           end
 
           # Returns the number of users who have added the LINE Official Account on or before a specified date. 
@@ -129,7 +129,7 @@ def get_number_of_followers_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -140,7 +140,7 @@ def get_number_of_followers_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Returns the number of users who have added the LINE Official Account on or before a specified date. 
@@ -151,11 +151,11 @@ def get_number_of_followers_with_http_info(
           def get_number_of_followers(
             date: nil
           )
-            body, _status_code, _headers = get_number_of_followers_with_http_info(
+            response_body, _status_code, _headers = get_number_of_followers_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # Returns the number of messages sent from LINE Official Account on a specified day. 
@@ -176,7 +176,7 @@ def get_number_of_message_deliveries_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -187,7 +187,7 @@ def get_number_of_message_deliveries_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Returns the number of messages sent from LINE Official Account on a specified day. 
@@ -198,11 +198,11 @@ def get_number_of_message_deliveries_with_http_info(
           def get_number_of_message_deliveries(
             date:
           )
-            body, _status_code, _headers = get_number_of_message_deliveries_with_http_info(
+            response_body, _status_code, _headers = get_number_of_message_deliveries_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # You can check the per-unit statistics of how users interact with push messages and multicast messages sent from your LINE Official Account. 
@@ -228,7 +228,7 @@ def get_statistics_per_unit_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -239,7 +239,7 @@ def get_statistics_per_unit_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # You can check the per-unit statistics of how users interact with push messages and multicast messages sent from your LINE Official Account. 
@@ -253,13 +253,13 @@ def get_statistics_per_unit(
             from:,
             to:
           )
-            body, _status_code, _headers = get_statistics_per_unit_with_http_info(
+            response_body, _status_code, _headers = get_statistics_per_unit_with_http_info(
               custom_aggregation_unit: custom_aggregation_unit,
               from: from,
               to: to
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/liff/api/liff_client.rb b/lib/line/bot/v2/liff/api/liff_client.rb
index 0f1043a2..3415938b 100644
--- a/lib/line/bot/v2/liff/api/liff_client.rb
+++ b/lib/line/bot/v2/liff/api/liff_client.rb
@@ -43,7 +43,7 @@ def add_liff_app_with_http_info(
               body_params: add_liff_app_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -58,7 +58,7 @@ def add_liff_app_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Adding the LIFF app to a channel
@@ -69,11 +69,11 @@ def add_liff_app_with_http_info(
           def add_liff_app(
             add_liff_app_request:
           )
-            body, _status_code, _headers = add_liff_app_with_http_info(
+            response_body, _status_code, _headers = add_liff_app_with_http_info(
               add_liff_app_request: add_liff_app_request
             )
 
-            body
+            response_body
           end
 
           # Deletes a LIFF app from a channel. 
@@ -91,7 +91,7 @@ def delete_liff_app_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 401
@@ -102,7 +102,7 @@ def delete_liff_app_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Deletes a LIFF app from a channel. 
@@ -113,11 +113,11 @@ def delete_liff_app_with_http_info(
           def delete_liff_app(
             liff_id:
           )
-            body, _status_code, _headers = delete_liff_app_with_http_info(
+            response_body, _status_code, _headers = delete_liff_app_with_http_info(
               liff_id: liff_id
             )
 
-            body
+            response_body
           end
 
           # Gets information on all the LIFF apps added to the channel.
@@ -132,7 +132,7 @@ def get_all_liff_apps_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -147,7 +147,7 @@ def get_all_liff_apps_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets information on all the LIFF apps added to the channel.
@@ -156,10 +156,10 @@ def get_all_liff_apps_with_http_info(
           # @see https://developers.line.biz/en/reference/liff-server/#get-all-liff-apps
           def get_all_liff_apps(
           )
-            body, _status_code, _headers = get_all_liff_apps_with_http_info(
+            response_body, _status_code, _headers = get_all_liff_apps_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Update LIFF app settings
@@ -180,7 +180,7 @@ def update_liff_app_with_http_info(
               body_params: update_liff_app_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -193,7 +193,7 @@ def update_liff_app_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Update LIFF app settings
@@ -206,12 +206,12 @@ def update_liff_app(
             liff_id:,
             update_liff_app_request:
           )
-            body, _status_code, _headers = update_liff_app_with_http_info(
+            response_body, _status_code, _headers = update_liff_app_with_http_info(
               liff_id: liff_id,
               update_liff_app_request: update_liff_app_request
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/manage_audience/api/manage_audience_blob_client.rb b/lib/line/bot/v2/manage_audience/api/manage_audience_blob_client.rb
index 31938ecc..39a5e1df 100644
--- a/lib/line/bot/v2/manage_audience/api/manage_audience_blob_client.rb
+++ b/lib/line/bot/v2/manage_audience/api/manage_audience_blob_client.rb
@@ -52,14 +52,14 @@ def add_user_ids_to_audience_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Add user IDs or Identifiers for Advertisers (IFAs) to an audience for uploading user IDs (by file).
@@ -73,13 +73,13 @@ def add_user_ids_to_audience(
             audience_group_id: nil,
             upload_description: nil
           )
-            body, _status_code, _headers = add_user_ids_to_audience_with_http_info(
+            response_body, _status_code, _headers = add_user_ids_to_audience_with_http_info(
               file: file,
               audience_group_id: audience_group_id,
               upload_description: upload_description
             )
 
-            body
+            response_body
           end
 
           # Create audience for uploading user IDs (by file).
@@ -109,7 +109,7 @@ def create_audience_for_uploading_user_ids_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -120,7 +120,7 @@ def create_audience_for_uploading_user_ids_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Create audience for uploading user IDs (by file).
@@ -136,14 +136,14 @@ def create_audience_for_uploading_user_ids(
             is_ifa_audience: nil,
             upload_description: nil
           )
-            body, _status_code, _headers = create_audience_for_uploading_user_ids_with_http_info(
+            response_body, _status_code, _headers = create_audience_for_uploading_user_ids_with_http_info(
               file: file,
               description: description,
               is_ifa_audience: is_ifa_audience,
               upload_description: upload_description
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/manage_audience/api/manage_audience_client.rb b/lib/line/bot/v2/manage_audience/api/manage_audience_client.rb
index e8b41ee1..1c18f5e6 100644
--- a/lib/line/bot/v2/manage_audience/api/manage_audience_client.rb
+++ b/lib/line/bot/v2/manage_audience/api/manage_audience_client.rb
@@ -42,14 +42,14 @@ def activate_audience_group_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Activate audience
@@ -59,11 +59,11 @@ def activate_audience_group_with_http_info(
           def activate_audience_group(
             audience_group_id:
           )
-            body, _status_code, _headers = activate_audience_group_with_http_info(
+            response_body, _status_code, _headers = activate_audience_group_with_http_info(
               audience_group_id: audience_group_id
             )
 
-            body
+            response_body
           end
 
           # Add user IDs or Identifiers for Advertisers (IFAs) to an audience for uploading user IDs (by JSON)
@@ -80,14 +80,14 @@ def add_audience_to_audience_group_with_http_info(
               body_params: add_audience_to_audience_group_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Add user IDs or Identifiers for Advertisers (IFAs) to an audience for uploading user IDs (by JSON)
@@ -97,11 +97,11 @@ def add_audience_to_audience_group_with_http_info(
           def add_audience_to_audience_group(
             add_audience_to_audience_group_request:
           )
-            body, _status_code, _headers = add_audience_to_audience_group_with_http_info(
+            response_body, _status_code, _headers = add_audience_to_audience_group_with_http_info(
               add_audience_to_audience_group_request: add_audience_to_audience_group_request
             )
 
-            body
+            response_body
           end
 
           # Create audience for uploading user IDs (by JSON)
@@ -118,7 +118,7 @@ def create_audience_group_with_http_info(
               body_params: create_audience_group_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -129,7 +129,7 @@ def create_audience_group_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Create audience for uploading user IDs (by JSON)
@@ -139,11 +139,11 @@ def create_audience_group_with_http_info(
           def create_audience_group(
             create_audience_group_request:
           )
-            body, _status_code, _headers = create_audience_group_with_http_info(
+            response_body, _status_code, _headers = create_audience_group_with_http_info(
               create_audience_group_request: create_audience_group_request
             )
 
-            body
+            response_body
           end
 
           # Create audience for click-based retargeting
@@ -160,7 +160,7 @@ def create_click_based_audience_group_with_http_info(
               body_params: create_click_based_audience_group_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -171,7 +171,7 @@ def create_click_based_audience_group_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Create audience for click-based retargeting
@@ -181,11 +181,11 @@ def create_click_based_audience_group_with_http_info(
           def create_click_based_audience_group(
             create_click_based_audience_group_request:
           )
-            body, _status_code, _headers = create_click_based_audience_group_with_http_info(
+            response_body, _status_code, _headers = create_click_based_audience_group_with_http_info(
               create_click_based_audience_group_request: create_click_based_audience_group_request
             )
 
-            body
+            response_body
           end
 
           # Create audience for impression-based retargeting
@@ -202,7 +202,7 @@ def create_imp_based_audience_group_with_http_info(
               body_params: create_imp_based_audience_group_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -213,7 +213,7 @@ def create_imp_based_audience_group_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Create audience for impression-based retargeting
@@ -223,11 +223,11 @@ def create_imp_based_audience_group_with_http_info(
           def create_imp_based_audience_group(
             create_imp_based_audience_group_request:
           )
-            body, _status_code, _headers = create_imp_based_audience_group_with_http_info(
+            response_body, _status_code, _headers = create_imp_based_audience_group_with_http_info(
               create_imp_based_audience_group_request: create_imp_based_audience_group_request
             )
 
-            body
+            response_body
           end
 
           # Delete audience
@@ -244,14 +244,14 @@ def delete_audience_group_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Delete audience
@@ -261,11 +261,11 @@ def delete_audience_group_with_http_info(
           def delete_audience_group(
             audience_group_id:
           )
-            body, _status_code, _headers = delete_audience_group_with_http_info(
+            response_body, _status_code, _headers = delete_audience_group_with_http_info(
               audience_group_id: audience_group_id
             )
 
-            body
+            response_body
           end
 
           # Gets audience data.
@@ -282,7 +282,7 @@ def get_audience_data_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -299,7 +299,7 @@ def get_audience_data_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets audience data.
@@ -309,11 +309,11 @@ def get_audience_data_with_http_info(
           def get_audience_data(
             audience_group_id:
           )
-            body, _status_code, _headers = get_audience_data_with_http_info(
+            response_body, _status_code, _headers = get_audience_data_with_http_info(
               audience_group_id: audience_group_id
             )
 
-            body
+            response_body
           end
 
           # Get the authority level of the audience
@@ -327,7 +327,7 @@ def get_audience_group_authority_level_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -338,7 +338,7 @@ def get_audience_group_authority_level_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get the authority level of the audience
@@ -346,10 +346,10 @@ def get_audience_group_authority_level_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-authority-level
           def get_audience_group_authority_level(
           )
-            body, _status_code, _headers = get_audience_group_authority_level_with_http_info(
+            response_body, _status_code, _headers = get_audience_group_authority_level_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Gets data for more than one audience.
@@ -384,7 +384,7 @@ def get_audience_groups_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -395,7 +395,7 @@ def get_audience_groups_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets data for more than one audience.
@@ -415,7 +415,7 @@ def get_audience_groups(
             includes_external_public_groups: nil,
             create_route: nil
           )
-            body, _status_code, _headers = get_audience_groups_with_http_info(
+            response_body, _status_code, _headers = get_audience_groups_with_http_info(
               page: page,
               description: description,
               status: status,
@@ -424,7 +424,7 @@ def get_audience_groups(
               create_route: create_route
             )
 
-            body
+            response_body
           end
 
           # Gets audience data.
@@ -441,7 +441,7 @@ def get_shared_audience_data_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -458,7 +458,7 @@ def get_shared_audience_data_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets audience data.
@@ -468,11 +468,11 @@ def get_shared_audience_data_with_http_info(
           def get_shared_audience_data(
             audience_group_id:
           )
-            body, _status_code, _headers = get_shared_audience_data_with_http_info(
+            response_body, _status_code, _headers = get_shared_audience_data_with_http_info(
               audience_group_id: audience_group_id
             )
 
-            body
+            response_body
           end
 
           # Gets data for more than one audience, including those shared by the Business Manager.
@@ -504,7 +504,7 @@ def get_shared_audience_groups_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -515,7 +515,7 @@ def get_shared_audience_groups_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets data for more than one audience, including those shared by the Business Manager.
@@ -533,7 +533,7 @@ def get_shared_audience_groups(
             size: nil,
             create_route: nil
           )
-            body, _status_code, _headers = get_shared_audience_groups_with_http_info(
+            response_body, _status_code, _headers = get_shared_audience_groups_with_http_info(
               page: page,
               description: description,
               status: status,
@@ -541,7 +541,7 @@ def get_shared_audience_groups(
               create_route: create_route
             )
 
-            body
+            response_body
           end
 
           # Change the authority level of the audience
@@ -558,14 +558,14 @@ def update_audience_group_authority_level_with_http_info(
               body_params: update_audience_group_authority_level_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Change the authority level of the audience
@@ -575,11 +575,11 @@ def update_audience_group_authority_level_with_http_info(
           def update_audience_group_authority_level(
             update_audience_group_authority_level_request:
           )
-            body, _status_code, _headers = update_audience_group_authority_level_with_http_info(
+            response_body, _status_code, _headers = update_audience_group_authority_level_with_http_info(
               update_audience_group_authority_level_request: update_audience_group_authority_level_request
             )
 
-            body
+            response_body
           end
 
           # Renames an existing audience.
@@ -599,14 +599,14 @@ def update_audience_group_description_with_http_info(
               body_params: update_audience_group_description_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Renames an existing audience.
@@ -618,12 +618,12 @@ def update_audience_group_description(
             audience_group_id:,
             update_audience_group_description_request:
           )
-            body, _status_code, _headers = update_audience_group_description_with_http_info(
+            response_body, _status_code, _headers = update_audience_group_description_with_http_info(
               audience_group_id: audience_group_id,
               update_audience_group_description_request: update_audience_group_description_request
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/messaging_api/api/messaging_api_blob_client.rb b/lib/line/bot/v2/messaging_api/api/messaging_api_blob_client.rb
index b2af5d2d..e086fb01 100644
--- a/lib/line/bot/v2/messaging_api/api/messaging_api_blob_client.rb
+++ b/lib/line/bot/v2/messaging_api/api/messaging_api_blob_client.rb
@@ -42,14 +42,14 @@ def get_message_content_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Download image, video, and audio data sent from users.
@@ -59,11 +59,11 @@ def get_message_content_with_http_info(
           def get_message_content(
             message_id:
           )
-            body, _status_code, _headers = get_message_content_with_http_info(
+            response_body, _status_code, _headers = get_message_content_with_http_info(
               message_id: message_id
             )
 
-            body
+            response_body
           end
 
           # Get a preview image of the image or video
@@ -80,14 +80,14 @@ def get_message_content_preview_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get a preview image of the image or video
@@ -97,11 +97,11 @@ def get_message_content_preview_with_http_info(
           def get_message_content_preview(
             message_id:
           )
-            body, _status_code, _headers = get_message_content_preview_with_http_info(
+            response_body, _status_code, _headers = get_message_content_preview_with_http_info(
               message_id: message_id
             )
 
-            body
+            response_body
           end
 
           # Verify the preparation status of a video or audio for getting
@@ -118,7 +118,7 @@ def get_message_content_transcoding_by_message_id_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -129,7 +129,7 @@ def get_message_content_transcoding_by_message_id_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Verify the preparation status of a video or audio for getting
@@ -139,11 +139,11 @@ def get_message_content_transcoding_by_message_id_with_http_info(
           def get_message_content_transcoding_by_message_id(
             message_id:
           )
-            body, _status_code, _headers = get_message_content_transcoding_by_message_id_with_http_info(
+            response_body, _status_code, _headers = get_message_content_transcoding_by_message_id_with_http_info(
               message_id: message_id
             )
 
-            body
+            response_body
           end
 
           # Download rich menu image.
@@ -160,14 +160,14 @@ def get_rich_menu_image_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Download rich menu image.
@@ -177,11 +177,11 @@ def get_rich_menu_image_with_http_info(
           def get_rich_menu_image(
             rich_menu_id:
           )
-            body, _status_code, _headers = get_rich_menu_image_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_image_with_http_info(
               rich_menu_id: rich_menu_id
             )
 
-            body
+            response_body
           end
 
           # Upload rich menu image
@@ -201,14 +201,14 @@ def set_rich_menu_image_with_http_info(
               body_params: body,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Upload rich menu image
@@ -220,12 +220,12 @@ def set_rich_menu_image(
             rich_menu_id:,
             body: nil
           )
-            body, _status_code, _headers = set_rich_menu_image_with_http_info(
+            response_body, _status_code, _headers = set_rich_menu_image_with_http_info(
               rich_menu_id: rich_menu_id,
               body: body
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/messaging_api/api/messaging_api_client.rb b/lib/line/bot/v2/messaging_api/api/messaging_api_client.rb
index 627faaa6..9752f4bd 100644
--- a/lib/line/bot/v2/messaging_api/api/messaging_api_client.rb
+++ b/lib/line/bot/v2/messaging_api/api/messaging_api_client.rb
@@ -48,7 +48,7 @@ def broadcast_with_http_info(
               headers: header_params
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -79,7 +79,7 @@ def broadcast_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Sends a message to multiple users at any time.
@@ -91,12 +91,12 @@ def broadcast(
             broadcast_request:,
             x_line_retry_key: nil
           )
-            body, _status_code, _headers = broadcast_with_http_info(
+            response_body, _status_code, _headers = broadcast_with_http_info(
               broadcast_request: broadcast_request,
               x_line_retry_key: x_line_retry_key
             )
 
-            body
+            response_body
           end
 
           # Cancel default rich menu
@@ -110,14 +110,14 @@ def cancel_default_rich_menu_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Cancel default rich menu
@@ -125,10 +125,10 @@ def cancel_default_rich_menu_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#cancel-default-rich-menu
           def cancel_default_rich_menu(
           )
-            body, _status_code, _headers = cancel_default_rich_menu_with_http_info(
+            response_body, _status_code, _headers = cancel_default_rich_menu_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Create rich menu
@@ -145,7 +145,7 @@ def create_rich_menu_with_http_info(
               body_params: rich_menu_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -156,7 +156,7 @@ def create_rich_menu_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Create rich menu
@@ -166,11 +166,11 @@ def create_rich_menu_with_http_info(
           def create_rich_menu(
             rich_menu_request:
           )
-            body, _status_code, _headers = create_rich_menu_with_http_info(
+            response_body, _status_code, _headers = create_rich_menu_with_http_info(
               rich_menu_request: rich_menu_request
             )
 
-            body
+            response_body
           end
 
           # Create rich menu alias
@@ -187,7 +187,7 @@ def create_rich_menu_alias_with_http_info(
               body_params: create_rich_menu_alias_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -200,7 +200,7 @@ def create_rich_menu_alias_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Create rich menu alias
@@ -210,11 +210,11 @@ def create_rich_menu_alias_with_http_info(
           def create_rich_menu_alias(
             create_rich_menu_alias_request:
           )
-            body, _status_code, _headers = create_rich_menu_alias_with_http_info(
+            response_body, _status_code, _headers = create_rich_menu_alias_with_http_info(
               create_rich_menu_alias_request: create_rich_menu_alias_request
             )
 
-            body
+            response_body
           end
 
           # Deletes a rich menu.
@@ -231,14 +231,14 @@ def delete_rich_menu_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Deletes a rich menu.
@@ -248,11 +248,11 @@ def delete_rich_menu_with_http_info(
           def delete_rich_menu(
             rich_menu_id:
           )
-            body, _status_code, _headers = delete_rich_menu_with_http_info(
+            response_body, _status_code, _headers = delete_rich_menu_with_http_info(
               rich_menu_id: rich_menu_id
             )
 
-            body
+            response_body
           end
 
           # Delete rich menu alias
@@ -269,7 +269,7 @@ def delete_rich_menu_alias_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -282,7 +282,7 @@ def delete_rich_menu_alias_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Delete rich menu alias
@@ -292,11 +292,11 @@ def delete_rich_menu_alias_with_http_info(
           def delete_rich_menu_alias(
             rich_menu_alias_id:
           )
-            body, _status_code, _headers = delete_rich_menu_alias_with_http_info(
+            response_body, _status_code, _headers = delete_rich_menu_alias_with_http_info(
               rich_menu_alias_id: rich_menu_alias_id
             )
 
-            body
+            response_body
           end
 
           # Get name list of units used this month
@@ -319,7 +319,7 @@ def get_aggregation_unit_name_list_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -330,7 +330,7 @@ def get_aggregation_unit_name_list_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get name list of units used this month
@@ -342,12 +342,12 @@ def get_aggregation_unit_name_list(
             limit: nil,
             start: nil
           )
-            body, _status_code, _headers = get_aggregation_unit_name_list_with_http_info(
+            response_body, _status_code, _headers = get_aggregation_unit_name_list_with_http_info(
               limit: limit,
               start: start
             )
 
-            body
+            response_body
           end
 
           # Get number of units used this month
@@ -361,7 +361,7 @@ def get_aggregation_unit_usage_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -372,7 +372,7 @@ def get_aggregation_unit_usage_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of units used this month
@@ -380,10 +380,10 @@ def get_aggregation_unit_usage_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-number-of-units-used-this-month
           def get_aggregation_unit_usage(
           )
-            body, _status_code, _headers = get_aggregation_unit_usage_with_http_info(
+            response_body, _status_code, _headers = get_aggregation_unit_usage_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Get bot info
@@ -397,7 +397,7 @@ def get_bot_info_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -408,7 +408,7 @@ def get_bot_info_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get bot info
@@ -416,10 +416,10 @@ def get_bot_info_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-bot-info
           def get_bot_info(
           )
-            body, _status_code, _headers = get_bot_info_with_http_info(
+            response_body, _status_code, _headers = get_bot_info_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Gets the ID of the default rich menu set with the Messaging API.
@@ -433,7 +433,7 @@ def get_default_rich_menu_id_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -444,7 +444,7 @@ def get_default_rich_menu_id_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets the ID of the default rich menu set with the Messaging API.
@@ -452,10 +452,10 @@ def get_default_rich_menu_id_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-default-rich-menu-id
           def get_default_rich_menu_id(
           )
-            body, _status_code, _headers = get_default_rich_menu_id_with_http_info(
+            response_body, _status_code, _headers = get_default_rich_menu_id_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Get a list of users who added your LINE Official Account as a friend
@@ -478,7 +478,7 @@ def get_followers_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -489,7 +489,7 @@ def get_followers_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get a list of users who added your LINE Official Account as a friend
@@ -501,12 +501,12 @@ def get_followers(
             start: nil,
             limit: nil
           )
-            body, _status_code, _headers = get_followers_with_http_info(
+            response_body, _status_code, _headers = get_followers_with_http_info(
               start: start,
               limit: limit
             )
 
-            body
+            response_body
           end
 
           # Get number of users in a group chat
@@ -523,7 +523,7 @@ def get_group_member_count_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -534,7 +534,7 @@ def get_group_member_count_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of users in a group chat
@@ -544,11 +544,11 @@ def get_group_member_count_with_http_info(
           def get_group_member_count(
             group_id:
           )
-            body, _status_code, _headers = get_group_member_count_with_http_info(
+            response_body, _status_code, _headers = get_group_member_count_with_http_info(
               group_id: group_id
             )
 
-            body
+            response_body
           end
 
           # Get group chat member profile
@@ -568,7 +568,7 @@ def get_group_member_profile_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -579,7 +579,7 @@ def get_group_member_profile_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get group chat member profile
@@ -591,12 +591,12 @@ def get_group_member_profile(
             group_id:,
             user_id:
           )
-            body, _status_code, _headers = get_group_member_profile_with_http_info(
+            response_body, _status_code, _headers = get_group_member_profile_with_http_info(
               group_id: group_id,
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Get group chat member user IDs
@@ -619,7 +619,7 @@ def get_group_members_ids_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -630,7 +630,7 @@ def get_group_members_ids_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get group chat member user IDs
@@ -642,12 +642,12 @@ def get_group_members_ids(
             group_id:,
             start: nil
           )
-            body, _status_code, _headers = get_group_members_ids_with_http_info(
+            response_body, _status_code, _headers = get_group_members_ids_with_http_info(
               group_id: group_id,
               start: start
             )
 
-            body
+            response_body
           end
 
           # Get group chat summary
@@ -664,7 +664,7 @@ def get_group_summary_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -675,7 +675,7 @@ def get_group_summary_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get group chat summary
@@ -685,11 +685,11 @@ def get_group_summary_with_http_info(
           def get_group_summary(
             group_id:
           )
-            body, _status_code, _headers = get_group_summary_with_http_info(
+            response_body, _status_code, _headers = get_group_summary_with_http_info(
               group_id: group_id
             )
 
-            body
+            response_body
           end
 
           # Get a list of user IDs who joined the membership.
@@ -715,7 +715,7 @@ def get_joined_membership_users_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -738,7 +738,7 @@ def get_joined_membership_users_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get a list of user IDs who joined the membership.
@@ -752,13 +752,13 @@ def get_joined_membership_users(
             start: nil,
             limit: nil
           )
-            body, _status_code, _headers = get_joined_membership_users_with_http_info(
+            response_body, _status_code, _headers = get_joined_membership_users_with_http_info(
               membership_id: membership_id,
               start: start,
               limit: limit
             )
 
-            body
+            response_body
           end
 
           # Get a list of memberships.
@@ -772,7 +772,7 @@ def get_membership_list_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -789,7 +789,7 @@ def get_membership_list_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get a list of memberships.
@@ -797,10 +797,10 @@ def get_membership_list_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-membership-plans
           def get_membership_list(
           )
-            body, _status_code, _headers = get_membership_list_with_http_info(
+            response_body, _status_code, _headers = get_membership_list_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Get a user's membership subscription.
@@ -817,7 +817,7 @@ def get_membership_subscription_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -840,7 +840,7 @@ def get_membership_subscription_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get a user's membership subscription.
@@ -850,11 +850,11 @@ def get_membership_subscription_with_http_info(
           def get_membership_subscription(
             user_id:
           )
-            body, _status_code, _headers = get_membership_subscription_with_http_info(
+            response_body, _status_code, _headers = get_membership_subscription_with_http_info(
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Gets the target limit for sending messages in the current month. The total number of the free messages and the additional messages is returned.
@@ -868,7 +868,7 @@ def get_message_quota_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -879,7 +879,7 @@ def get_message_quota_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets the target limit for sending messages in the current month. The total number of the free messages and the additional messages is returned.
@@ -887,10 +887,10 @@ def get_message_quota_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-quota
           def get_message_quota(
           )
-            body, _status_code, _headers = get_message_quota_with_http_info(
+            response_body, _status_code, _headers = get_message_quota_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Gets the number of messages sent in the current month.
@@ -904,7 +904,7 @@ def get_message_quota_consumption_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -915,7 +915,7 @@ def get_message_quota_consumption_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets the number of messages sent in the current month.
@@ -923,10 +923,10 @@ def get_message_quota_consumption_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-consumption
           def get_message_quota_consumption(
           )
-            body, _status_code, _headers = get_message_quota_consumption_with_http_info(
+            response_body, _status_code, _headers = get_message_quota_consumption_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Gets the status of a narrowcast message.
@@ -946,7 +946,7 @@ def get_narrowcast_progress_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -957,7 +957,7 @@ def get_narrowcast_progress_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets the status of a narrowcast message.
@@ -967,11 +967,11 @@ def get_narrowcast_progress_with_http_info(
           def get_narrowcast_progress(
             request_id:
           )
-            body, _status_code, _headers = get_narrowcast_progress_with_http_info(
+            response_body, _status_code, _headers = get_narrowcast_progress_with_http_info(
               request_id: request_id
             )
 
-            body
+            response_body
           end
 
           # Get number of sent broadcast messages
@@ -991,7 +991,7 @@ def get_number_of_sent_broadcast_messages_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1002,7 +1002,7 @@ def get_number_of_sent_broadcast_messages_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of sent broadcast messages
@@ -1012,11 +1012,11 @@ def get_number_of_sent_broadcast_messages_with_http_info(
           def get_number_of_sent_broadcast_messages(
             date:
           )
-            body, _status_code, _headers = get_number_of_sent_broadcast_messages_with_http_info(
+            response_body, _status_code, _headers = get_number_of_sent_broadcast_messages_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # Get number of sent multicast messages
@@ -1036,7 +1036,7 @@ def get_number_of_sent_multicast_messages_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1047,7 +1047,7 @@ def get_number_of_sent_multicast_messages_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of sent multicast messages
@@ -1057,11 +1057,11 @@ def get_number_of_sent_multicast_messages_with_http_info(
           def get_number_of_sent_multicast_messages(
             date:
           )
-            body, _status_code, _headers = get_number_of_sent_multicast_messages_with_http_info(
+            response_body, _status_code, _headers = get_number_of_sent_multicast_messages_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # Get number of sent push messages
@@ -1081,7 +1081,7 @@ def get_number_of_sent_push_messages_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1092,7 +1092,7 @@ def get_number_of_sent_push_messages_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of sent push messages
@@ -1102,11 +1102,11 @@ def get_number_of_sent_push_messages_with_http_info(
           def get_number_of_sent_push_messages(
             date:
           )
-            body, _status_code, _headers = get_number_of_sent_push_messages_with_http_info(
+            response_body, _status_code, _headers = get_number_of_sent_push_messages_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # Get number of sent reply messages
@@ -1126,7 +1126,7 @@ def get_number_of_sent_reply_messages_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1137,7 +1137,7 @@ def get_number_of_sent_reply_messages_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of sent reply messages
@@ -1147,11 +1147,11 @@ def get_number_of_sent_reply_messages_with_http_info(
           def get_number_of_sent_reply_messages(
             date:
           )
-            body, _status_code, _headers = get_number_of_sent_reply_messages_with_http_info(
+            response_body, _status_code, _headers = get_number_of_sent_reply_messages_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # Get number of sent LINE notification messages　
@@ -1171,7 +1171,7 @@ def get_pnp_message_statistics_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1182,7 +1182,7 @@ def get_pnp_message_statistics_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of sent LINE notification messages　
@@ -1192,11 +1192,11 @@ def get_pnp_message_statistics_with_http_info(
           def get_pnp_message_statistics(
             date:
           )
-            body, _status_code, _headers = get_pnp_message_statistics_with_http_info(
+            response_body, _status_code, _headers = get_pnp_message_statistics_with_http_info(
               date: date
             )
 
-            body
+            response_body
           end
 
           # Get profile
@@ -1213,7 +1213,7 @@ def get_profile_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1224,7 +1224,7 @@ def get_profile_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get profile
@@ -1234,11 +1234,11 @@ def get_profile_with_http_info(
           def get_profile(
             user_id:
           )
-            body, _status_code, _headers = get_profile_with_http_info(
+            response_body, _status_code, _headers = get_profile_with_http_info(
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Gets a rich menu via a rich menu ID.
@@ -1255,7 +1255,7 @@ def get_rich_menu_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1266,7 +1266,7 @@ def get_rich_menu_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets a rich menu via a rich menu ID.
@@ -1276,11 +1276,11 @@ def get_rich_menu_with_http_info(
           def get_rich_menu(
             rich_menu_id:
           )
-            body, _status_code, _headers = get_rich_menu_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_with_http_info(
               rich_menu_id: rich_menu_id
             )
 
-            body
+            response_body
           end
 
           # Get rich menu alias information
@@ -1297,7 +1297,7 @@ def get_rich_menu_alias_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1308,7 +1308,7 @@ def get_rich_menu_alias_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get rich menu alias information
@@ -1318,11 +1318,11 @@ def get_rich_menu_alias_with_http_info(
           def get_rich_menu_alias(
             rich_menu_alias_id:
           )
-            body, _status_code, _headers = get_rich_menu_alias_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_alias_with_http_info(
               rich_menu_alias_id: rich_menu_alias_id
             )
 
-            body
+            response_body
           end
 
           # Get list of rich menu alias
@@ -1336,7 +1336,7 @@ def get_rich_menu_alias_list_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1347,7 +1347,7 @@ def get_rich_menu_alias_list_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get list of rich menu alias
@@ -1355,10 +1355,10 @@ def get_rich_menu_alias_list_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-rich-menu-alias-list
           def get_rich_menu_alias_list(
           )
-            body, _status_code, _headers = get_rich_menu_alias_list_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_alias_list_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Get the status of Replace or unlink a linked rich menus in batches.
@@ -1378,7 +1378,7 @@ def get_rich_menu_batch_progress_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1389,7 +1389,7 @@ def get_rich_menu_batch_progress_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get the status of Replace or unlink a linked rich menus in batches.
@@ -1399,11 +1399,11 @@ def get_rich_menu_batch_progress_with_http_info(
           def get_rich_menu_batch_progress(
             request_id:
           )
-            body, _status_code, _headers = get_rich_menu_batch_progress_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_batch_progress_with_http_info(
               request_id: request_id
             )
 
-            body
+            response_body
           end
 
           # Get rich menu ID of user
@@ -1420,7 +1420,7 @@ def get_rich_menu_id_of_user_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1431,7 +1431,7 @@ def get_rich_menu_id_of_user_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get rich menu ID of user
@@ -1441,11 +1441,11 @@ def get_rich_menu_id_of_user_with_http_info(
           def get_rich_menu_id_of_user(
             user_id:
           )
-            body, _status_code, _headers = get_rich_menu_id_of_user_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_id_of_user_with_http_info(
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Get rich menu list
@@ -1459,7 +1459,7 @@ def get_rich_menu_list_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1470,7 +1470,7 @@ def get_rich_menu_list_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get rich menu list
@@ -1478,10 +1478,10 @@ def get_rich_menu_list_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-rich-menu-list
           def get_rich_menu_list(
           )
-            body, _status_code, _headers = get_rich_menu_list_with_http_info(
+            response_body, _status_code, _headers = get_rich_menu_list_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Get number of users in a multi-person chat
@@ -1498,7 +1498,7 @@ def get_room_member_count_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1509,7 +1509,7 @@ def get_room_member_count_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get number of users in a multi-person chat
@@ -1519,11 +1519,11 @@ def get_room_member_count_with_http_info(
           def get_room_member_count(
             room_id:
           )
-            body, _status_code, _headers = get_room_member_count_with_http_info(
+            response_body, _status_code, _headers = get_room_member_count_with_http_info(
               room_id: room_id
             )
 
-            body
+            response_body
           end
 
           # Get multi-person chat member profile
@@ -1543,7 +1543,7 @@ def get_room_member_profile_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1554,7 +1554,7 @@ def get_room_member_profile_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get multi-person chat member profile
@@ -1566,12 +1566,12 @@ def get_room_member_profile(
             room_id:,
             user_id:
           )
-            body, _status_code, _headers = get_room_member_profile_with_http_info(
+            response_body, _status_code, _headers = get_room_member_profile_with_http_info(
               room_id: room_id,
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Get multi-person chat member user IDs
@@ -1594,7 +1594,7 @@ def get_room_members_ids_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1605,7 +1605,7 @@ def get_room_members_ids_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get multi-person chat member user IDs
@@ -1617,12 +1617,12 @@ def get_room_members_ids(
             room_id:,
             start: nil
           )
-            body, _status_code, _headers = get_room_members_ids_with_http_info(
+            response_body, _status_code, _headers = get_room_members_ids_with_http_info(
               room_id: room_id,
               start: start
             )
 
-            body
+            response_body
           end
 
           # Get webhook endpoint information
@@ -1636,7 +1636,7 @@ def get_webhook_endpoint_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1647,7 +1647,7 @@ def get_webhook_endpoint_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Get webhook endpoint information
@@ -1655,10 +1655,10 @@ def get_webhook_endpoint_with_http_info(
           # @see https://developers.line.biz/en/reference/messaging-api/#get-webhook-endpoint-information
           def get_webhook_endpoint(
           )
-            body, _status_code, _headers = get_webhook_endpoint_with_http_info(
+            response_body, _status_code, _headers = get_webhook_endpoint_with_http_info(
             )
 
-            body
+            response_body
           end
 
           # Issue link token
@@ -1675,7 +1675,7 @@ def issue_link_token_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -1686,7 +1686,7 @@ def issue_link_token_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Issue link token
@@ -1696,11 +1696,11 @@ def issue_link_token_with_http_info(
           def issue_link_token(
             user_id:
           )
-            body, _status_code, _headers = issue_link_token_with_http_info(
+            response_body, _status_code, _headers = issue_link_token_with_http_info(
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Leave group chat
@@ -1717,7 +1717,7 @@ def leave_group_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -1736,7 +1736,7 @@ def leave_group_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Leave group chat
@@ -1746,11 +1746,11 @@ def leave_group_with_http_info(
           def leave_group(
             group_id:
           )
-            body, _status_code, _headers = leave_group_with_http_info(
+            response_body, _status_code, _headers = leave_group_with_http_info(
               group_id: group_id
             )
 
-            body
+            response_body
           end
 
           # Leave multi-person chat
@@ -1767,14 +1767,14 @@ def leave_room_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Leave multi-person chat
@@ -1784,11 +1784,11 @@ def leave_room_with_http_info(
           def leave_room(
             room_id:
           )
-            body, _status_code, _headers = leave_room_with_http_info(
+            response_body, _status_code, _headers = leave_room_with_http_info(
               room_id: room_id
             )
 
-            body
+            response_body
           end
 
           # Link rich menu to user.
@@ -1808,14 +1808,14 @@ def link_rich_menu_id_to_user_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Link rich menu to user.
@@ -1827,12 +1827,12 @@ def link_rich_menu_id_to_user(
             user_id:,
             rich_menu_id:
           )
-            body, _status_code, _headers = link_rich_menu_id_to_user_with_http_info(
+            response_body, _status_code, _headers = link_rich_menu_id_to_user_with_http_info(
               user_id: user_id,
               rich_menu_id: rich_menu_id
             )
 
-            body
+            response_body
           end
 
           # Link rich menu to multiple users
@@ -1849,14 +1849,14 @@ def link_rich_menu_id_to_users_with_http_info(
               body_params: rich_menu_bulk_link_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Link rich menu to multiple users
@@ -1866,11 +1866,11 @@ def link_rich_menu_id_to_users_with_http_info(
           def link_rich_menu_id_to_users(
             rich_menu_bulk_link_request:
           )
-            body, _status_code, _headers = link_rich_menu_id_to_users_with_http_info(
+            response_body, _status_code, _headers = link_rich_menu_id_to_users_with_http_info(
               rich_menu_bulk_link_request: rich_menu_bulk_link_request
             )
 
-            body
+            response_body
           end
 
           # Mark messages from users as read
@@ -1887,14 +1887,14 @@ def mark_messages_as_read_with_http_info(
               body_params: mark_messages_as_read_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Mark messages from users as read
@@ -1904,11 +1904,11 @@ def mark_messages_as_read_with_http_info(
           def mark_messages_as_read(
             mark_messages_as_read_request:
           )
-            body, _status_code, _headers = mark_messages_as_read_with_http_info(
+            response_body, _status_code, _headers = mark_messages_as_read_with_http_info(
               mark_messages_as_read_request: mark_messages_as_read_request
             )
 
-            body
+            response_body
           end
 
           # An API that efficiently sends the same message to multiple user IDs. You can't send messages to group chats or multi-person chats.
@@ -1931,7 +1931,7 @@ def multicast_with_http_info(
               headers: header_params
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -1962,7 +1962,7 @@ def multicast_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # An API that efficiently sends the same message to multiple user IDs. You can't send messages to group chats or multi-person chats.
@@ -1974,12 +1974,12 @@ def multicast(
             multicast_request:,
             x_line_retry_key: nil
           )
-            body, _status_code, _headers = multicast_with_http_info(
+            response_body, _status_code, _headers = multicast_with_http_info(
               multicast_request: multicast_request,
               x_line_retry_key: x_line_retry_key
             )
 
-            body
+            response_body
           end
 
           # Send narrowcast message
@@ -2002,7 +2002,7 @@ def narrowcast_with_http_info(
               headers: header_params
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    when 400
@@ -2033,7 +2033,7 @@ def narrowcast_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Send narrowcast message
@@ -2045,12 +2045,12 @@ def narrowcast(
             narrowcast_request:,
             x_line_retry_key: nil
           )
-            body, _status_code, _headers = narrowcast_with_http_info(
+            response_body, _status_code, _headers = narrowcast_with_http_info(
               narrowcast_request: narrowcast_request,
               x_line_retry_key: x_line_retry_key
             )
 
-            body
+            response_body
           end
 
           # Sends a message to a user, group chat, or multi-person chat at any time.
@@ -2073,7 +2073,7 @@ def push_message_with_http_info(
               headers: header_params
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -2108,7 +2108,7 @@ def push_message_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Sends a message to a user, group chat, or multi-person chat at any time.
@@ -2120,12 +2120,12 @@ def push_message(
             push_message_request:,
             x_line_retry_key: nil
           )
-            body, _status_code, _headers = push_message_with_http_info(
+            response_body, _status_code, _headers = push_message_with_http_info(
               push_message_request: push_message_request,
               x_line_retry_key: x_line_retry_key
             )
 
-            body
+            response_body
           end
 
           # Send LINE notification message
@@ -2148,7 +2148,7 @@ def push_messages_by_phone_with_http_info(
               headers: header_params
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 422
@@ -2161,7 +2161,7 @@ def push_messages_by_phone_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Send LINE notification message
@@ -2173,12 +2173,12 @@ def push_messages_by_phone(
             pnp_messages_request:,
             x_line_delivery_tag: nil
           )
-            body, _status_code, _headers = push_messages_by_phone_with_http_info(
+            response_body, _status_code, _headers = push_messages_by_phone_with_http_info(
               pnp_messages_request: pnp_messages_request,
               x_line_delivery_tag: x_line_delivery_tag
             )
 
-            body
+            response_body
           end
 
           # Send reply message
@@ -2195,7 +2195,7 @@ def reply_message_with_http_info(
               body_params: reply_message_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -2218,7 +2218,7 @@ def reply_message_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Send reply message
@@ -2228,11 +2228,11 @@ def reply_message_with_http_info(
           def reply_message(
             reply_message_request:
           )
-            body, _status_code, _headers = reply_message_with_http_info(
+            response_body, _status_code, _headers = reply_message_with_http_info(
               reply_message_request: reply_message_request
             )
 
-            body
+            response_body
           end
 
           # You can use this endpoint to batch control the rich menu linked to the users using the endpoint such as Link rich menu to user. The following operations are available:  1. Replace a rich menu with another rich menu for all users linked to a specific rich menu 2. Unlink a rich menu for all users linked to a specific rich menu 3. Unlink a rich menu for all users linked the rich menu 
@@ -2249,14 +2249,14 @@ def rich_menu_batch_with_http_info(
               body_params: rich_menu_batch_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # You can use this endpoint to batch control the rich menu linked to the users using the endpoint such as Link rich menu to user. The following operations are available:  1. Replace a rich menu with another rich menu for all users linked to a specific rich menu 2. Unlink a rich menu for all users linked to a specific rich menu 3. Unlink a rich menu for all users linked the rich menu 
@@ -2266,11 +2266,11 @@ def rich_menu_batch_with_http_info(
           def rich_menu_batch(
             rich_menu_batch_request:
           )
-            body, _status_code, _headers = rich_menu_batch_with_http_info(
+            response_body, _status_code, _headers = rich_menu_batch_with_http_info(
               rich_menu_batch_request: rich_menu_batch_request
             )
 
-            body
+            response_body
           end
 
           # Set default rich menu
@@ -2287,14 +2287,14 @@ def set_default_rich_menu_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Set default rich menu
@@ -2304,11 +2304,11 @@ def set_default_rich_menu_with_http_info(
           def set_default_rich_menu(
             rich_menu_id:
           )
-            body, _status_code, _headers = set_default_rich_menu_with_http_info(
+            response_body, _status_code, _headers = set_default_rich_menu_with_http_info(
               rich_menu_id: rich_menu_id
             )
 
-            body
+            response_body
           end
 
           # Set webhook endpoint URL
@@ -2325,14 +2325,14 @@ def set_webhook_endpoint_with_http_info(
               body_params: set_webhook_endpoint_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Set webhook endpoint URL
@@ -2342,11 +2342,11 @@ def set_webhook_endpoint_with_http_info(
           def set_webhook_endpoint(
             set_webhook_endpoint_request:
           )
-            body, _status_code, _headers = set_webhook_endpoint_with_http_info(
+            response_body, _status_code, _headers = set_webhook_endpoint_with_http_info(
               set_webhook_endpoint_request: set_webhook_endpoint_request
             )
 
-            body
+            response_body
           end
 
           # Display a loading animation in one-on-one chats between users and LINE Official Accounts.
@@ -2363,7 +2363,7 @@ def show_loading_animation_with_http_info(
               body_params: show_loading_animation_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    when 400
@@ -2376,7 +2376,7 @@ def show_loading_animation_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Display a loading animation in one-on-one chats between users and LINE Official Accounts.
@@ -2386,11 +2386,11 @@ def show_loading_animation_with_http_info(
           def show_loading_animation(
             show_loading_animation_request:
           )
-            body, _status_code, _headers = show_loading_animation_with_http_info(
+            response_body, _status_code, _headers = show_loading_animation_with_http_info(
               show_loading_animation_request: show_loading_animation_request
             )
 
-            body
+            response_body
           end
 
           # Test webhook endpoint
@@ -2407,7 +2407,7 @@ def test_webhook_endpoint_with_http_info(
               body_params: test_webhook_endpoint_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -2418,7 +2418,7 @@ def test_webhook_endpoint_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Test webhook endpoint
@@ -2428,11 +2428,11 @@ def test_webhook_endpoint_with_http_info(
           def test_webhook_endpoint(
             test_webhook_endpoint_request: nil
           )
-            body, _status_code, _headers = test_webhook_endpoint_with_http_info(
+            response_body, _status_code, _headers = test_webhook_endpoint_with_http_info(
               test_webhook_endpoint_request: test_webhook_endpoint_request
             )
 
-            body
+            response_body
           end
 
           # Unlink rich menu from user
@@ -2449,14 +2449,14 @@ def unlink_rich_menu_id_from_user_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Unlink rich menu from user
@@ -2466,11 +2466,11 @@ def unlink_rich_menu_id_from_user_with_http_info(
           def unlink_rich_menu_id_from_user(
             user_id:
           )
-            body, _status_code, _headers = unlink_rich_menu_id_from_user_with_http_info(
+            response_body, _status_code, _headers = unlink_rich_menu_id_from_user_with_http_info(
               user_id: user_id
             )
 
-            body
+            response_body
           end
 
           # Unlink rich menus from multiple users
@@ -2487,14 +2487,14 @@ def unlink_rich_menu_id_from_users_with_http_info(
               body_params: rich_menu_bulk_unlink_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 202
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Unlink rich menus from multiple users
@@ -2504,11 +2504,11 @@ def unlink_rich_menu_id_from_users_with_http_info(
           def unlink_rich_menu_id_from_users(
             rich_menu_bulk_unlink_request:
           )
-            body, _status_code, _headers = unlink_rich_menu_id_from_users_with_http_info(
+            response_body, _status_code, _headers = unlink_rich_menu_id_from_users_with_http_info(
               rich_menu_bulk_unlink_request: rich_menu_bulk_unlink_request
             )
 
-            body
+            response_body
           end
 
           # Update rich menu alias
@@ -2528,7 +2528,7 @@ def update_rich_menu_alias_with_http_info(
               body_params: update_rich_menu_alias_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    when 400
@@ -2541,7 +2541,7 @@ def update_rich_menu_alias_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Update rich menu alias
@@ -2553,12 +2553,12 @@ def update_rich_menu_alias(
             rich_menu_alias_id:,
             update_rich_menu_alias_request:
           )
-            body, _status_code, _headers = update_rich_menu_alias_with_http_info(
+            response_body, _status_code, _headers = update_rich_menu_alias_with_http_info(
               rich_menu_alias_id: rich_menu_alias_id,
               update_rich_menu_alias_request: update_rich_menu_alias_request
             )
 
-            body
+            response_body
           end
 
           # Validate message objects of a broadcast message
@@ -2575,14 +2575,14 @@ def validate_broadcast_with_http_info(
               body_params: validate_message_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate message objects of a broadcast message
@@ -2592,11 +2592,11 @@ def validate_broadcast_with_http_info(
           def validate_broadcast(
             validate_message_request:
           )
-            body, _status_code, _headers = validate_broadcast_with_http_info(
+            response_body, _status_code, _headers = validate_broadcast_with_http_info(
               validate_message_request: validate_message_request
             )
 
-            body
+            response_body
           end
 
           # Validate message objects of a multicast message
@@ -2613,14 +2613,14 @@ def validate_multicast_with_http_info(
               body_params: validate_message_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate message objects of a multicast message
@@ -2630,11 +2630,11 @@ def validate_multicast_with_http_info(
           def validate_multicast(
             validate_message_request:
           )
-            body, _status_code, _headers = validate_multicast_with_http_info(
+            response_body, _status_code, _headers = validate_multicast_with_http_info(
               validate_message_request: validate_message_request
             )
 
-            body
+            response_body
           end
 
           # Validate message objects of a narrowcast message
@@ -2651,14 +2651,14 @@ def validate_narrowcast_with_http_info(
               body_params: validate_message_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate message objects of a narrowcast message
@@ -2668,11 +2668,11 @@ def validate_narrowcast_with_http_info(
           def validate_narrowcast(
             validate_message_request:
           )
-            body, _status_code, _headers = validate_narrowcast_with_http_info(
+            response_body, _status_code, _headers = validate_narrowcast_with_http_info(
               validate_message_request: validate_message_request
             )
 
-            body
+            response_body
           end
 
           # Validate message objects of a push message
@@ -2689,14 +2689,14 @@ def validate_push_with_http_info(
               body_params: validate_message_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate message objects of a push message
@@ -2706,11 +2706,11 @@ def validate_push_with_http_info(
           def validate_push(
             validate_message_request:
           )
-            body, _status_code, _headers = validate_push_with_http_info(
+            response_body, _status_code, _headers = validate_push_with_http_info(
               validate_message_request: validate_message_request
             )
 
-            body
+            response_body
           end
 
           # Validate message objects of a reply message
@@ -2727,14 +2727,14 @@ def validate_reply_with_http_info(
               body_params: validate_message_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate message objects of a reply message
@@ -2744,11 +2744,11 @@ def validate_reply_with_http_info(
           def validate_reply(
             validate_message_request:
           )
-            body, _status_code, _headers = validate_reply_with_http_info(
+            response_body, _status_code, _headers = validate_reply_with_http_info(
               validate_message_request: validate_message_request
             )
 
-            body
+            response_body
           end
 
           # Validate a request body of the Replace or unlink the linked rich menus in batches endpoint.
@@ -2765,14 +2765,14 @@ def validate_rich_menu_batch_request_with_http_info(
               body_params: rich_menu_batch_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate a request body of the Replace or unlink the linked rich menus in batches endpoint.
@@ -2782,11 +2782,11 @@ def validate_rich_menu_batch_request_with_http_info(
           def validate_rich_menu_batch_request(
             rich_menu_batch_request:
           )
-            body, _status_code, _headers = validate_rich_menu_batch_request_with_http_info(
+            response_body, _status_code, _headers = validate_rich_menu_batch_request_with_http_info(
               rich_menu_batch_request: rich_menu_batch_request
             )
 
-            body
+            response_body
           end
 
           # Validate rich menu object
@@ -2803,14 +2803,14 @@ def validate_rich_menu_object_with_http_info(
               body_params: rich_menu_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Validate rich menu object
@@ -2820,11 +2820,11 @@ def validate_rich_menu_object_with_http_info(
           def validate_rich_menu_object(
             rich_menu_request:
           )
-            body, _status_code, _headers = validate_rich_menu_object_with_http_info(
+            response_body, _status_code, _headers = validate_rich_menu_object_with_http_info(
               rich_menu_request: rich_menu_request
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/module/api/line_module_client.rb b/lib/line/bot/v2/module/api/line_module_client.rb
index cada7ba2..c4ea0310 100644
--- a/lib/line/bot/v2/module/api/line_module_client.rb
+++ b/lib/line/bot/v2/module/api/line_module_client.rb
@@ -45,14 +45,14 @@ def acquire_chat_control_with_http_info(
               body_params: acquire_chat_control_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # If the Standby Channel wants to take the initiative (Chat Control), it calls the Acquire Control API. The channel that was previously an Active Channel will automatically switch to a Standby Channel. 
@@ -64,12 +64,12 @@ def acquire_chat_control(
             chat_id:,
             acquire_chat_control_request: nil
           )
-            body, _status_code, _headers = acquire_chat_control_with_http_info(
+            response_body, _status_code, _headers = acquire_chat_control_with_http_info(
               chat_id: chat_id,
               acquire_chat_control_request: acquire_chat_control_request
             )
 
-            body
+            response_body
           end
 
           # The module channel admin calls the Detach API to detach the module channel from a LINE Official Account.
@@ -86,14 +86,14 @@ def detach_module_with_http_info(
               body_params: detach_module_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # The module channel admin calls the Detach API to detach the module channel from a LINE Official Account.
@@ -103,11 +103,11 @@ def detach_module_with_http_info(
           def detach_module(
             detach_module_request: nil
           )
-            body, _status_code, _headers = detach_module_with_http_info(
+            response_body, _status_code, _headers = detach_module_with_http_info(
               detach_module_request: detach_module_request
             )
 
-            body
+            response_body
           end
 
           # Gets a list of basic information about the bots of multiple LINE Official Accounts that have attached module channels.
@@ -130,7 +130,7 @@ def get_modules_with_http_info(
               query_params: query_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -141,7 +141,7 @@ def get_modules_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Gets a list of basic information about the bots of multiple LINE Official Accounts that have attached module channels.
@@ -153,12 +153,12 @@ def get_modules(
             start: nil,
             limit: nil
           )
-            body, _status_code, _headers = get_modules_with_http_info(
+            response_body, _status_code, _headers = get_modules_with_http_info(
               start: start,
               limit: limit
             )
 
-            body
+            response_body
           end
 
           # To return the initiative (Chat Control) of Active Channel to Primary Channel, call the Release Control API. 
@@ -175,14 +175,14 @@ def release_chat_control_with_http_info(
               path: path,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # To return the initiative (Chat Control) of Active Channel to Primary Channel, call the Release Control API. 
@@ -192,11 +192,11 @@ def release_chat_control_with_http_info(
           def release_chat_control(
             chat_id:
           )
-            body, _status_code, _headers = release_chat_control_with_http_info(
+            response_body, _status_code, _headers = release_chat_control_with_http_info(
               chat_id: chat_id
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/module_attach/api/line_module_attach_client.rb b/lib/line/bot/v2/module_attach/api/line_module_attach_client.rb
index 842a9f43..8dbded38 100644
--- a/lib/line/bot/v2/module_attach/api/line_module_attach_client.rb
+++ b/lib/line/bot/v2/module_attach/api/line_module_attach_client.rb
@@ -73,7 +73,7 @@ def attach_module_with_http_info(
               form_params: form_params,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      json = Line::Bot::V2::Utils.deep_underscore(JSON.parse(response.body))
                      json.transform_keys! do |key|
@@ -84,7 +84,7 @@ def attach_module_with_http_info(
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Attach by operation of the module channel provider
@@ -112,7 +112,7 @@ def attach_module(
             scope: nil,
             brand_type: nil
           )
-            body, _status_code, _headers = attach_module_with_http_info(
+            response_body, _status_code, _headers = attach_module_with_http_info(
               grant_type: grant_type,
               code: code,
               redirect_uri: redirect_uri,
@@ -125,7 +125,7 @@ def attach_module(
               brand_type: brand_type
             )
 
-            body
+            response_body
           end
         end
       end
diff --git a/lib/line/bot/v2/shop/api/shop_client.rb b/lib/line/bot/v2/shop/api/shop_client.rb
index c90ae3f0..5a1eafda 100644
--- a/lib/line/bot/v2/shop/api/shop_client.rb
+++ b/lib/line/bot/v2/shop/api/shop_client.rb
@@ -42,14 +42,14 @@ def mission_sticker_v3_with_http_info(
               body_params: mission_sticker_request,
             )
 
-            body = case response.code.to_i
+            response_body = case response.code.to_i
                    when 200
                      response.body
                    else
                      response.body
                    end
 
-            [body, response.code.to_i, response.each_header.to_h]
+            [response_body, response.code.to_i, response.each_header.to_h]
           end
 
           # Sends a mission sticker.
@@ -59,11 +59,11 @@ def mission_sticker_v3_with_http_info(
           def mission_sticker_v3(
             mission_sticker_request:
           )
-            body, _status_code, _headers = mission_sticker_v3_with_http_info(
+            response_body, _status_code, _headers = mission_sticker_v3_with_http_info(
               mission_sticker_request: mission_sticker_request
             )
 
-            body
+            response_body
           end
         end
       end