code: def test_rename_axis_inplace(self, datetime_series):
      # GH 15704
      expected = datetime_series.rename_axis("foo")
      result = datetime_series
      no_return = result.rename_axis("foo", inplace=True)
  
      assert no_return is None
      tm.assert_series_equal(result, expected)
  
imports: import pytest
  from pandas import Index, MultiIndex, Series
  import pandas._testing
label_desc: Use image node_id 2 for calling the TestSeriesRenameAxis obj's underlying member method code with example usage: obj.test_rename_axis_inplace(datetime_series) without return types