chore: change the async_request_streamed to be consistent with request_streamed

src/main/java/com/google/genai/Models.java

@@ -4487,6 +4487,7 @@ ObjectNode candidateFromMldev(ApiClient apiClient, JsonNode fromObject, ObjectNo
   ObjectNode generateContentResponseFromMldev(
       ApiClient apiClient, JsonNode fromObject, ObjectNode parentObject) {
     ObjectNode toObject = JsonSerializable.objectMapper.createObjectNode();
+
     if (Common.getValueByPath(fromObject, new String[] {"candidates"}) != null) {
       ArrayNode keyArray =
           (ArrayNode) Common.getValueByPath(fromObject, new String[] {"candidates"});
@@ -5337,6 +5338,7 @@ ObjectNode candidateFromVertex(
   ObjectNode generateContentResponseFromVertex(
       ApiClient apiClient, JsonNode fromObject, ObjectNode parentObject) {
     ObjectNode toObject = JsonSerializable.objectMapper.createObjectNode();
+
     if (Common.getValueByPath(fromObject, new String[] {"candidates"}) != null) {
       ArrayNode keyArray =
           (ArrayNode) Common.getValueByPath(fromObject, new String[] {"candidates"});

src/main/java/com/google/genai/types/GenerateContentConfig.java

@@ -44,6 +44,10 @@ public abstract class GenerateContentConfig extends JsonSerializable {
   @JsonProperty("httpOptions")
   public abstract Optional<HttpOptions> httpOptions();
 
+  /** If true, the raw HTTP response will be returned in the 'sdk_http_response' field. */
+  @JsonProperty("shouldReturnHttpResponse")
+  public abstract Optional<Boolean> shouldReturnHttpResponse();
+
   /**
    * Instructions for the model to steer it toward better performance. For example, "Answer as
    * concisely as possible" or "Don't use technical terms in your response".
@@ -233,6 +237,15 @@ public Builder httpOptions(HttpOptions.Builder httpOptionsBuilder) {
       return httpOptions(httpOptionsBuilder.build());
     }
 
+    /**
+     * Setter for shouldReturnHttpResponse.
+     *
+     * <p>shouldReturnHttpResponse: If true, the raw HTTP response will be returned in the
+     * 'sdk_http_response' field.
+     */
+    @JsonProperty("shouldReturnHttpResponse")
+    public abstract Builder shouldReturnHttpResponse(boolean shouldReturnHttpResponse);
+
     /**
      * Setter for systemInstruction.
      *

src/main/java/com/google/genai/types/GenerateContentResponse.java

@@ -41,6 +41,10 @@
 @AutoValue
 @JsonDeserialize(builder = GenerateContentResponse.Builder.class)
 public abstract class GenerateContentResponse extends JsonSerializable {
+  /** Used to retain the full HTTP response. */
+  @JsonProperty("sdkHttpResponse")
+  public abstract Optional<HttpResponse> sdkHttpResponse();
+
   /** Response variations returned by the model. */
   @JsonProperty("candidates")
   public abstract Optional<List<Candidate>> candidates();
@@ -89,6 +93,23 @@ private static Builder create() {
       return new AutoValue_GenerateContentResponse.Builder();
     }
 
+    /**
+     * Setter for sdkHttpResponse.
+     *
+     * <p>sdkHttpResponse: Used to retain the full HTTP response.
+     */
+    @JsonProperty("sdkHttpResponse")
+    public abstract Builder sdkHttpResponse(HttpResponse sdkHttpResponse);
+
+    /**
+     * Setter for sdkHttpResponse builder.
+     *
+     * <p>sdkHttpResponse: Used to retain the full HTTP response.
+     */
+    public Builder sdkHttpResponse(HttpResponse.Builder sdkHttpResponseBuilder) {
+      return sdkHttpResponse(sdkHttpResponseBuilder.build());
+    }
+
     /**
      * Setter for candidates.
      *