code: def _get_range_dimension_key(self,
                                   base_key: Key,
                                   start_time: datetime,
                                   end_time: datetime,
                                   count: int = 0) -> List[Tuple[Key, Any]]:
          
          raise NotImplementedError()
docs: Returns the list of items from the store based on the given time range or count.
  
          This is used when the key being used is a DIMENSION key.