code: def norm(self, limits=None):
          
          kwargs = {}
          if limits is not None:
              kwargs = {'min': limits[0], 'max': limits[1]}
          return dim(self, norm, **kwargs)
docs: Unity-based normalization to scale data into 0-1 range.
  
              (values - min) / (max - min)
  
          Args:
              limits: tuple of (min, max) defining the normalization range