public final OperationFuture<Subscription, UpdateSubscriptionMetadata> updateSubscriptionAsync(
      Subscription subscription, FieldMask updateMask) {
    UpdateSubscriptionRequest request =
        UpdateSubscriptionRequest.newBuilder()
            .setSubscription(subscription)
            .setUpdateMask(updateMask)
            .build();
    return updateSubscriptionAsync(request);
  }
Updates or renews a Google Workspace subscription. To learn how to use this method, see [Update
or renew a Google Workspace
subscription](https://developers.google.com/workspace/events/guides/update-subscription).

<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 (SubscriptionsServiceClient subscriptionsServiceClient =
    SubscriptionsServiceClient.create()) {
  Subscription subscription = Subscription.newBuilder().build();
  FieldMask updateMask = FieldMask.newBuilder().build();
  Subscription response =
      subscriptionsServiceClient.updateSubscriptionAsync(subscription, updateMask).get();
}
}</pre>

@param subscription Required. The subscription to update.
    <p>The subscription's `name` field is used to identify the subscription to update.
@param updateMask Optional. Required. The field to update.
    <p>You can update one of the following fields in a subscription:
    <ul>
      <li>[`expire_time`][google.apps.events.subscriptions.v1.Subscription.expire_time]: The
          timestamp when the subscription expires.
      <li>[`ttl`][google.apps.events.subscriptions.v1.Subscription.ttl]: The time-to-live (TTL)
          or duration of the subscription.
    </ul>

@throws com.google.api.gax.rpc.ApiException if the remote call fails
java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/SubscriptionsServiceClient.java