public final OperationFuture<ExternalAddress, OperationMetadata> createExternalAddressAsync(
      PrivateCloudName parent, ExternalAddress externalAddress, String externalAddressId) {
    CreateExternalAddressRequest request =
        CreateExternalAddressRequest.newBuilder()
            .setParent(parent == null ? null : parent.toString())
            .setExternalAddress(externalAddress)
            .setExternalAddressId(externalAddressId)
            .build();
    return createExternalAddressAsync(request);
  }
Creates a new `ExternalAddress` resource in a given private cloud. The network policy that
corresponds to the private cloud must have the external IP address network service enabled
(`NetworkPolicy.external_ip`).

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (VmwareEngineClient vmwareEngineClient = VmwareEngineClient.create()) {
  PrivateCloudName parent = PrivateCloudName.of("[PROJECT]", "[LOCATION]", "[PRIVATE_CLOUD]");
  ExternalAddress externalAddress = ExternalAddress.newBuilder().build();
  String externalAddressId = "externalAddressId221595812";
  ExternalAddress response =
      vmwareEngineClient
          .createExternalAddressAsync(parent, externalAddress, externalAddressId)
          .get();
}
}</pre>

@param parent Required. The resource name of the private cloud to create a new external IP
    address in. Resource names are schemeless URIs that follow the conventions in
    https://cloud.google.com/apis/design/resource_names. For example:
    `projects/my-project/locations/us-central1-a/privateClouds/my-cloud`
@param externalAddress Required. The initial description of a new external IP address.
@param externalAddressId Required. The user-provided identifier of the `ExternalAddress` to be
    created. This identifier must be unique among `ExternalAddress` resources within the parent
    and becomes the final token in the name URI. The identifier must meet the following
    requirements:
    <ul>
      <li>Only contains 1-63 alphanumeric characters and hyphens
      <li>Begins with an alphabetical character
      <li>Ends with a non-hyphen character
      <li>Not formatted as a UUID
      <li>Complies with [RFC 1034](https://datatracker.ietf.org/doc/html/rfc1034) (section 3.5)
    </ul>

@throws com.google.api.gax.rpc.ApiException if the remote call fails
java-vmwareengine/google-cloud-vmwareengine/src/main/java/com/google/cloud/vmwareengine/v1/VmwareEngineClient.java