code: def estimate_size(self):
      return estimate_pandas_size(self.obj) + estimate_pandas_size(
          self.obj.index
      )
  
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 6 for calling the GroupByWrapper obj's underlying member method code with example usage: obj.estimate_size() and returns: unknown