docs: def filter_cols(model, *filtered_columns):
      """Return columnsnames for a model except named ones.
  
      Useful for defer() for example to retain only columns of interest
      """
      m = sa.orm.class_mapper(model)
      return list(
          {p.key for p in m.iterate_properties if hasattr(p, "columns")}.difference(
              filtered_columns
          )
      )