public Builder clearResponseId() {
      responseId_ = getDefaultInstance().getResponseId();
      bitField0_ = (bitField0_ & ~0x00000008);
      onChanged();
      return this;
    }
<pre>
Output only. response_id is used to identify each response. It is the
encoding of the event_id.
</pre>

<code>string response_id = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GenerateContentResponse.java