code: def _get_cluster_sizes(self):
          
          # NOTE: log and power are hardcoded, should we allow the user to specify?
          return prop_to_size(
              self.scores_, mi=self.min_size, ma=self.max_size, log=False, power=0.5
          )
docs: Returns the marker size (in points, e.g. area of the circle) based on
          the scores, using the prop_to_size scaling mechanism.