/// <summary>
/// Gets the access control policy for a [Queue][google.cloud.tasks.v2.Queue].
/// Returns an empty policy if the resource exists and does not have a policy
/// set.
///
/// Authorization requires the following
/// [Google IAM](https://cloud.google.com/iam) permission on the specified
/// resource parent:
///
/// * `cloudtasks.queues.getIamPolicy`
/// </summary>
/// <param name="resource">
/// REQUIRED: The resource for which the policy is being requested.
/// See the operation documentation for the appropriate value for this field.
/// </param>
/// <param name="cancellationToken">
/// A <see cref="st::CancellationToken"/> to use for this RPC.
/// </param>
/// <returns>
/// A Task containing the RPC response.
/// </returns>
public virtual stt::Task <iam::Policy> GetIamPolicyAsync(
QueueName resource,
st::CancellationToken cancellationToken) => GetIamPolicyAsync(
resource,
gaxgrpc::CallSettings.FromCancellationToken(cancellationToken));