public Builder mergeResponse(com.google.cloud.vertexai.api.Schema value) {
      if (responseBuilder_ == null) {
        if (((bitField0_ & 0x00000008) != 0)
            && response_ != null
            && response_ != com.google.cloud.vertexai.api.Schema.getDefaultInstance()) {
          getResponseBuilder().mergeFrom(value);
        } else {
          response_ = value;
        }
      } else {
        responseBuilder_.mergeFrom(value);
      }
      if (response_ != null) {
        bitField0_ |= 0x00000008;
        onChanged();
      }
      return this;
    }
<pre>
Optional. Describes the output from this function in JSON Schema format.
Reflects the Open API 3.03 Response Object. The Schema defines the type
used for the response value of the function.
</pre>

<code>
.google.cloud.vertexai.v1.Schema response = 4 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/FunctionDeclaration.java