code: def test_grouped_box_return_type_groupby(self, hist_df):
      df = hist_df
      # now for groupby
      result = df.groupby("gender").boxplot(return_type="dict")
      _check_box_return_type(
          result, "dict", expected_keys=["Male", "Female"]
      )
  
imports: import itertools
  import string
  import numpy
  import pytest
  from pandas import DataFrame, MultiIndex, Series, date_range, plotting, timedelta_range
  import pandas._testing
  from pandas.tests.plotting.common import _check_axes_shape, _check_box_return_type, _check_plot_works, _check_ticks_props, _check_visible
  from pandas.io.formats.printing import pprint_thing
label_desc: Use image node_id 9 for calling the TestDataFrameGroupByPlots obj's underlying member method code with example usage: obj.test_grouped_box_return_type_groupby(hist_df) without return types