code: def get_orm_columns(cls: Type) -> List[Column]:
      
      mapper = inspect(cls)  # type: Mapper
      # ... returns InstanceState if called with an ORM object
      #     http://docs.sqlalchemy.org/en/latest/orm/session_state_management.html#session-object-states  # noqa
      # ... returns Mapper if called with an ORM class
      #     http://docs.sqlalchemy.org/en/latest/orm/mapping_api.html#sqlalchemy.orm.mapper.Mapper  # noqa
      colmap = mapper.columns  # type: OrderedProperties
      return colmap.values()
docs: Gets :class:`Column` objects from an SQLAlchemy ORM class.
      Does not provide their attribute names.