code: def __sizeof__(self):
      return sys.getsizeof(self.obj) + sys.getsizeof(
          getattr(self.groupby_obj.grouper, "_cache", None)
      )
  
imports: import sys
  from collections.abc import Iterable
  import cloudpickle
  import numpy
  from pandas.core.groupby import DataFrameGroupBy, SeriesGroupBy
  from ..utils import estimate_pandas_size, pd_release_version, no_default
label_desc: Use image node_id 5 for calling the GroupByWrapper obj's underlying member method code with example usage: obj.__sizeof__() and returns: unknown