public Builder mergeFunctionResponse(com.google.cloud.vertexai.api.FunctionResponse value) {
      if (functionResponseBuilder_ == null) {
        if (dataCase_ == 6
            && data_ != com.google.cloud.vertexai.api.FunctionResponse.getDefaultInstance()) {
          data_ =
              com.google.cloud.vertexai.api.FunctionResponse.newBuilder(
                      (com.google.cloud.vertexai.api.FunctionResponse) data_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          data_ = value;
        }
        onChanged();
      } else {
        if (dataCase_ == 6) {
          functionResponseBuilder_.mergeFrom(value);
        } else {
          functionResponseBuilder_.setMessage(value);
        }
      }
      dataCase_ = 6;
      return this;
    }
<pre>
Optional. The result output of a [FunctionCall] that contains a string
representing the [FunctionDeclaration.name] and a structured JSON object
containing any output from the function call. It is used as context to
the model.
</pre>

<code>
.google.cloud.vertexai.v1.FunctionResponse function_response = 6 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Part.java