code: def output_hist(self, output_hist: Hist, input_observable: Any, **kwargs: Dict[str, Any]) -> Union[Hist, Any]:
          
          return output_hist
docs: Return an output object. It should store the ``output_hist``.
  
          Note:
              The output object could just be the raw histogram.
  
          Note:
              This function is just a basic placeholder which returns the given output object (a histogram)
              and likely should be overridden.
  
          Args:
              output_hist: The output histogram
              input_observable (object): The corresponding input object. It could be a histogram or something
                  more complex.
              kwargs: Projection information dict combined with additional arguments passed to the
                  projection function
          Return:
              The output object which should be stored in the output dict. By default, it returns the
                  output hist.