code: def _verify_arguments(self, kwargs):
          
          geom_stat_args = kwargs.keys() | self._stat._kwargs.keys()
          unknown = (geom_stat_args -
                     self.aesthetics() -                # geom aesthetics
                     self.DEFAULT_PARAMS.keys() -        # geom parameters
                     self._stat.aesthetics() -          # stat aesthetics
                     self._stat.DEFAULT_PARAMS.keys() -  # stat parameters
                     {'data', 'mapping',                # layer parameters
                      'show_legend', 'inherit_aes'})    # layer parameters
          if unknown:
              msg = ("Parameters {}, are not understood by "
                     "either the geom, stat or layer.")
              raise PlotnineError(msg.format(unknown))
docs: Verify arguments passed to the geom