public static com.google.cloud.vertexai.api.GenerateContentResponse getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
Usage metadata about the response(s).
</pre>

<code>.google.cloud.vertexai.v1.GenerateContentResponse.UsageMetadata usage_metadata = 4;
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GenerateContentResponse.java