code: def _project_TH2(self, hist: Hist) -> Any:
          
          if len(self.projection_axes) != 1:
              raise ValueError(len(self.projection_axes), "Invalid number of axes")
  
          #logger.debug(f"self.projection_axes[0].axis: {self.projection_axes[0].axis}, axis range name: {self.projection_axes[0].name}, axis_type: {self.projection_axes[0].axis_type}")
          # NOTE: We cannot use TH3.ProjectionZ(...) because it has different semantics than ProjectionX
          #       and ProjectionY. In particular, it doesn't respect the axis limits of axis onto which it
          #       is projected.  So we have to separate the projection by histogram type as opposed to axis
          #       length.
          projection_func_map = {
              TH1AxisType.x_axis.value: hist.ProjectionX,
              TH1AxisType.y_axis.value: hist.ProjectionY
          }
  
          # Determine the axis_type value
          # Use try here instead of checking for a particular type to protect against type changes (say
          # in the enum)
          try:
              # Try to extract the value from an enum
              axis_type = self.projection_axes[0].axis_type.value
          except ValueError:
              # Seems that we received an int, so just use that value
              axis_type = self.axis_type  # type: ignore
  
          projection_func = projection_func_map[axis_type]
  
          # Do the actual projection
          logger.info(f"Projecting onto axis range {self.projection_axes[0].name} from hist {hist.GetName()}")
          projected_hist = projection_func()
  
          return projected_hist
docs: Perform the actual TH2 -> TH1 projection.
  
          This projection can only be to 1D.
  
          Args:
              hist (ROOT.TH2): Histogram from which the projections should be performed.
          Returns:
              ROOT.TH1: The projected histogram.