private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vertexai.api.Endpoint,
            com.google.cloud.vertexai.api.Endpoint.Builder,
            com.google.cloud.vertexai.api.EndpointOrBuilder>
        getEndpointFieldBuilder() {
      if (endpointBuilder_ == null) {
        endpointBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vertexai.api.Endpoint,
                com.google.cloud.vertexai.api.Endpoint.Builder,
                com.google.cloud.vertexai.api.EndpointOrBuilder>(
                getEndpoint(), getParentForChildren(), isClean());
        endpoint_ = null;
      }
      return endpointBuilder_;
    }
<pre>
Required. The Endpoint which replaces the resource on the server.
</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/UpdateEndpointRequest.java