public Task<AddSourceIdentifierToSubscriptionResponse> AddSourceIdentifierToSubscriptionAsync(AddSourceIdentifierToSubscriptionRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new AddSourceIdentifierToSubscriptionRequestMarshaller();
var unmarshaller = AddSourceIdentifierToSubscriptionResponseUnmarshaller.Instance;
return InvokeAsync<AddSourceIdentifierToSubscriptionRequest,AddSourceIdentifierToSubscriptionResponse>(request, marshaller,
unmarshaller, cancellationToken);
}