@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(1, getEndpoint());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Required. The Endpoint which replaces the resource on the server. Currently
we only support updating the `client_connection_config` field, all the
other fields' update will be blocked.
</pre>

<code>
.google.cloud.vertexai.v1.Endpoint endpoint = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/UpdateEndpointLongRunningRequest.java