Relax data dictionary (#103)

Author: ferhatelmas

src/main/java/io/getstream/core/models/CollectionData.java

@@ -1,7 +1,6 @@
 package io.getstream.core.models;
 
 import static com.google.common.base.MoreObjects.firstNonNull;
-import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static io.getstream.core.utils.Serialization.convert;
 
@@ -55,7 +54,6 @@ public Map<String, Object> getData() {
 
   @JsonAnySetter
   public <T> CollectionData set(String key, T value) {
-    checkArgument(!"id".equals(key), "Key can't be named 'id'");
     checkNotNull(key, "Key can't be null");
 
     data.put(key, value);

src/main/java/io/getstream/core/models/Data.java

@@ -1,6 +1,5 @@
 package io.getstream.core.models;
 
-import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static io.getstream.core.utils.Serialization.convert;
 
@@ -40,7 +39,6 @@ public Map<String, Object> getData() {
   }
 
   public <T> Data set(String key, T value) {
-    checkArgument(!"id".equals(key), "Key can't be named 'id'");
     checkNotNull(key, "Key can't be null");
 
     data.put(key, value);

src/main/java/io/getstream/core/models/ProfileData.java

@@ -56,7 +56,6 @@ public <T> T get(String key) {
 
   @JsonAnySetter
   public <T> ProfileData set(String key, T value) {
-    checkArgument(!"id".equals(key), "Key can't be named 'id'");
     checkNotNull(key, "Key can't be null");
 
     data.put(key, value);