code: def test_pad_backfill_deprecated(self, func):
      # GH#33396
      ser = Series([1, 2, 3])
      with tm.assert_produces_warning(FutureWarning):
          getattr(ser, func)()
  
imports: from datetime import datetime, timedelta, timezone
  import numpy
  import pytest
  import pytz
  from pandas import Categorical, DataFrame, DatetimeIndex, NaT, Period, Series, Timedelta, Timestamp, date_range, isna, timedelta_range
  import pandas._testing
  from pandas.core.arrays import period_array
label_desc: Use image node_id 11 for calling the TestFillnaPad obj's underlying member method code with example usage: obj.test_pad_backfill_deprecated(func) without return types