public Task<CheckIfPhoneNumberIsOptedOutResponse> CheckIfPhoneNumberIsOptedOutAsync(CheckIfPhoneNumberIsOptedOutRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new CheckIfPhoneNumberIsOptedOutRequestMarshaller();
var unmarshaller = CheckIfPhoneNumberIsOptedOutResponseUnmarshaller.Instance;
return InvokeAsync<CheckIfPhoneNumberIsOptedOutRequest,CheckIfPhoneNumberIsOptedOutResponse>(request, marshaller,
unmarshaller, cancellationToken);
}