public com.google.protobuf.ByteString getModelBytes() {
      java.lang.Object ref = model_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        model_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Optional. The name of the publisher model requested to serve the
prediction. Format:
`projects/{project}/locations/{location}/publishers/&#42;&#47;models/&#42;`
</pre>

<code>string model = 3 [(.google.api.field_behavior) = OPTIONAL];</code>

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