Fix integration for JsonSettings::serializeTypeInDocuments

Author: rhernandez35

Diff for: codecs/json-codec/src/main/java/software/amazon/smithy/java/json/JsonCodec.java

@@ -141,6 +141,17 @@ public Builder defaultNamespace(String defaultNamespace) {
             return this;
         }
 
+        /**
+         * Whether the type field should be written when Documents are being serialized. Default is true.
+         *
+         * @param serializeTypeInDocuments if the type field should be written when Documents are being serialized
+         * @return the builder
+         */
+        public Builder serializeTypeInDocuments(boolean serializeTypeInDocuments) {
+            settingsBuilder.serializeTypeInDocuments(serializeTypeInDocuments);
+            return this;
+        }
+
         /**
          * Uses a custom JSON serde provider.
          *

Diff for: codecs/json-codec/src/main/java/software/amazon/smithy/java/json/JsonSettings.java

@@ -104,6 +104,15 @@ public String defaultNamespace() {
         return defaultNamespace;
     }
 
+    /**
+     * Whether the type field should be written when Documents are being serialized. Default is true.
+     *
+     * @return true if the type field should be written when Documents are being serialized
+     */
+    public boolean serializeTypeInDocuments() {
+        return serializeTypeInDocuments;
+    }
+
     JsonSerdeProvider provider() {
         return provider;
     }
@@ -118,6 +127,7 @@ void updateBuilder(Builder builder) {
         if (fieldMapper instanceof JsonFieldMapper.UseJsonNameTrait) {
             builder.useJsonName(true);
         }
+        builder.serializeTypeInDocuments(serializeTypeInDocuments);
     }
 
     /**
@@ -220,9 +230,10 @@ public Builder defaultNamespace(String defaultNamespace) {
         }
 
         /**
+         * Whether the type field should be written when Documents are being serialized. Default is true.
          *
-         * @param serializeTypeInDocuments
-         * @return
+         * @param serializeTypeInDocuments if the type field should be written when Documents are being serialized
+         * @return the builder
          */
         public Builder serializeTypeInDocuments(boolean serializeTypeInDocuments) {
             this.serializeTypeInDocuments = serializeTypeInDocuments;

Diff for: codecs/json-codec/src/main/java/software/amazon/smithy/java/json/jackson/JacksonJsonSerializer.java

@@ -292,7 +292,9 @@ private static final class SerializeDocumentContents extends SpecificShapeSerial
         public void writeStruct(Schema schema, SerializableStruct struct) {
             try {
                 parent.generator.writeStartObject();
-                parent.generator.writeStringField("__type", schema.id().toString());
+                if (parent.settings.serializeTypeInDocuments()) {
+                    parent.generator.writeStringField("__type", schema.id().toString());
+                }
                 struct.serializeMembers(parent.structSerializer);
                 parent.generator.writeEndObject();
             } catch (Exception e) {