code: public ServiceFuture<List<MediaServiceInner>> listByResourceGroupAsync(String resourceGroupName, final ServiceCallback<List<MediaServiceInner>> serviceCallback) {
          return ServiceFuture.fromResponse(listByResourceGroupWithServiceResponseAsync(resourceGroupName), serviceCallback);
      }
docs: Lists all of the Media Services in a resource group.
  
  @param resourceGroupName Name of the resource group within the Azure subscription.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @return the {@link ServiceFuture} object