code: def __getitem__(self, item):
      return GroupByWrapper(
          self.obj,
          keys=self.keys,
          axis=self.axis,
          level=self.level,
          grouper=self.groupby_obj.grouper,
          exclusions=self.exclusions,
          selection=item,
          as_index=self.as_index,
          sort=self.sort,
          group_keys=self.group_keys,
          squeeze=self.squeeze,
          observed=self.observed,
          dropna=self.dropna,
          mutated=self.mutated,
      )
  
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 2 for calling the GroupByWrapper obj's underlying member method code with example usage: obj.__getitem__(item) and returns: GroupByWrapper