code: def _convert_listlike_indexer(self, keyarr, kind=None):
          
          if isinstance(keyarr, Index):
              keyarr = self._convert_index_indexer(keyarr)
          else:
              keyarr = self._convert_arr_indexer(keyarr)
  
          indexer = self._convert_list_indexer(keyarr, kind=kind)
          return indexer, keyarr
docs: Parameters
          ----------
          keyarr : list-like
              Indexer to convert.
  
          Returns
          -------
          indexer : numpy.ndarray or None
              Return an ndarray or None if cannot convert.
          keyarr : numpy.ndarray
              Return tuple-safe keys.