code: def test_roll(self):
      offset = BYearEnd(month=6)
      date = datetime(2009, 11, 30)
  
      assert offset.rollforward(date) == datetime(2010, 6, 30)
      assert offset.rollback(date) == datetime(2009, 6, 30)
  
file_path: pandas/pandas/tests/tseries/offsets/test_business_year.py
imports: from __future__ import annotations
  from datetime import datetime
  import pytest
  from pandas.tests.tseries.offsets.common import assert_is_on_offset, assert_offset_equal
  from pandas.tseries.offsets import BYearBegin, BYearEnd
label_desc: Use image node_id 3 for calling the TestBYearEndLagged obj's underlying member method code with example usage: obj.test_roll() without return types