docs: private void deletePubsubSubscription(String subscription) throws IOException {
      if (pubsubClient == null) {
        pubsubClient = newPubsubClient(options.as(PubsubOptions.class)).build();
      }
      if (executeNullIfNotFound(pubsubClient.projects().subscriptions().get(subscription)) != null) {
        pubsubClient.projects().subscriptions().delete(subscription).execute();
      }
    }