code: public Observable<BuildInner> beginQueueBuildAsync(String resourceGroupName, String registryName, QueueBuildRequest buildRequest) {
          return beginQueueBuildWithServiceResponseAsync(resourceGroupName, registryName, buildRequest).map(new Func1<ServiceResponse<BuildInner>, BuildInner>() {
              @Override
              public BuildInner call(ServiceResponse<BuildInner> response) {
                  return response.body();
              }
          });
      }
docs: Creates a new build based on the request parameters and add it to the build queue.
  
  @param resourceGroupName The name of the resource group to which the container registry belongs.
  @param registryName The name of the container registry.
  @param buildRequest The parameters of a build that needs to queued.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the BuildInner object