code: def testRollback2(self, _offset):
      assert _offset(-3).rollback(
          datetime(2014, 7, 5, 15, 0)
      ) == datetime(2014, 7, 4, 17, 0)
  
imports: from __future__ import annotations
  from datetime import datetime, time
  import numpy
  import pytest
  from pandas._libs.tslibs import Timestamp
  from pandas._libs.tslibs.offsets import BusinessHour, CustomBusinessHour, Nano
  from pandas.tests.tseries.offsets.common import assert_offset_equal
  from pandas.tseries.holiday import USFederalHolidayCalendar
label_desc: Use image node_id 9 for calling the TestCustomBusinessHour obj's underlying member method code with example usage: obj.testRollback2(_offset) without return types