Update generated code for v2189 and

Author: stripe-openapi[bot]

CODEGEN_VERSION

@@ -1 +1 @@
-49b1e23eef1a5004ed00987c41d5ec8447a19e27
+46812bb1234aef25ae1070b402c602491ee66f8d

src/main/java/com/stripe/model/BalanceTransactionSourceTypeAdapterFactory.java

@@ -25,9 +25,6 @@ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
     }
     final String discriminator = "object";
     final TypeAdapter<JsonElement> jsonElementAdapter = gson.getAdapter(JsonElement.class);
-    final TypeAdapter<com.stripe.model.BalanceTransactionSource> balanceTransactionSourceAdapter =
-        gson.getDelegateAdapter(
-            this, TypeToken.get(com.stripe.model.BalanceTransactionSource.class));
     final TypeAdapter<com.stripe.model.ApplicationFee> applicationFeeAdapter =
         gson.getDelegateAdapter(this, TypeToken.get(com.stripe.model.ApplicationFee.class));
     final TypeAdapter<com.stripe.model.Charge> chargeAdapter =
@@ -68,7 +65,13 @@ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
         new TypeAdapter<BalanceTransactionSource>() {
           @Override
           public void write(JsonWriter out, BalanceTransactionSource value) throws IOException {
-            balanceTransactionSourceAdapter.write(out, value);
+            @SuppressWarnings("unchecked")
+            TypeAdapter<BalanceTransactionSource> adapter =
+                (TypeAdapter<BalanceTransactionSource>)
+                    gson.getDelegateAdapter(
+                        BalanceTransactionSourceTypeAdapterFactory.this,
+                        TypeToken.get(value.getClass()));
+            adapter.write(out, value);
           }
 
           @Override

src/main/java/com/stripe/model/ExternalAccountTypeAdapterFactory.java

@@ -28,8 +28,6 @@ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
     }
     final String discriminator = "object";
     final TypeAdapter<JsonElement> jsonElementAdapter = gson.getAdapter(JsonElement.class);
-    final TypeAdapter<com.stripe.model.ExternalAccount> externalAccountAdapter =
-        gson.getDelegateAdapter(this, TypeToken.get(com.stripe.model.ExternalAccount.class));
     final TypeAdapter<com.stripe.model.BankAccount> bankAccountAdapter =
         gson.getDelegateAdapter(this, TypeToken.get(com.stripe.model.BankAccount.class));
     final TypeAdapter<com.stripe.model.Card> cardAdapter =
@@ -39,7 +37,12 @@ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
         new TypeAdapter<ExternalAccount>() {
           @Override
           public void write(JsonWriter out, ExternalAccount value) throws IOException {
-            externalAccountAdapter.write(out, value);
+            @SuppressWarnings("unchecked")
+            TypeAdapter<ExternalAccount> adapter =
+                (TypeAdapter<ExternalAccount>)
+                    gson.getDelegateAdapter(
+                        ExternalAccountTypeAdapterFactory.this, TypeToken.get(value.getClass()));
+            adapter.write(out, value);
           }
 
           @Override

src/main/java/com/stripe/model/PaymentSourceTypeAdapterFactory.java

@@ -25,8 +25,6 @@ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
     }
     final String discriminator = "object";
     final TypeAdapter<JsonElement> jsonElementAdapter = gson.getAdapter(JsonElement.class);
-    final TypeAdapter<com.stripe.model.PaymentSource> paymentSourceAdapter =
-        gson.getDelegateAdapter(this, TypeToken.get(com.stripe.model.PaymentSource.class));
     final TypeAdapter<com.stripe.model.Account> accountAdapter =
         gson.getDelegateAdapter(this, TypeToken.get(com.stripe.model.Account.class));
     final TypeAdapter<com.stripe.model.BankAccount> bankAccountAdapter =
@@ -40,7 +38,12 @@ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
         new TypeAdapter<PaymentSource>() {
           @Override
           public void write(JsonWriter out, PaymentSource value) throws IOException {
-            paymentSourceAdapter.write(out, value);
+            @SuppressWarnings("unchecked")
+            TypeAdapter<PaymentSource> adapter =
+                (TypeAdapter<PaymentSource>)
+                    gson.getDelegateAdapter(
+                        PaymentSourceTypeAdapterFactory.this, TypeToken.get(value.getClass()));
+            adapter.write(out, value);
           }
 
           @Override