code: public ServiceFuture<ResourceGroupInner> createOrUpdateAsync(String resourceGroupName, ResourceGroupInner parameters, final ServiceCallback<ResourceGroupInner> serviceCallback) {
          return ServiceFuture.fromResponse(createOrUpdateWithServiceResponseAsync(resourceGroupName, parameters), serviceCallback);
      }
docs: Creates a resource group.
  
  @param resourceGroupName The name of the resource group to create or update.
  @param parameters Parameters supplied to the create or update a resource group.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object