@java.lang.Override
      protected Builder newBuilderForType(
          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
        Builder builder = new Builder(parent);
        return builder;
      }
<pre>
The model name to use. Only the public LLM models are accepted. e.g.
'gemini-1.5-pro-001'.
</pre>

<code>optional string model_name = 1;</code>

@return The bytes for modelName.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GenerationConfig.java