code: def test_timestamp_tz_localize_nonexistent_shift(
      self, start_ts, tz, end_ts, shift, tz_type, unit
  ):
      # GH 8917, 24466
      tz = tz_type + tz
      if isinstance(shift, str):
          shift = "shift_" + shift
      ts = Timestamp(start_ts).as_unit(unit)
      result = ts.tz_localize(tz, nonexistent=shift)
      expected = Timestamp(end_ts).tz_localize(tz)
  
      if unit == "us":
          assert result == expected.replace(nanosecond=0)
      elif unit == "ms":
          micros = expected.microsecond - expected.microsecond % 1000
          assert result == expected.replace(
              microsecond=micros, nanosecond=0
          )
      elif unit == "s":
          assert result == expected.replace(microsecond=0, nanosecond=0)
      else:
          assert result == expected
      assert (
          result._creso
          == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
      )
  
imports: from datetime import timedelta
  import re
  from dateutil.tz import gettz
  import pytest
  import pytz
  from pytz.exceptions import AmbiguousTimeError, NonExistentTimeError
  from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
  from pandas.errors import OutOfBoundsDatetime
  from pandas import NaT, Timestamp
label_desc: Use image node_id 11 for calling the TestTimestampTZLocalize obj's underlying member method code with example usage: obj.test_timestamp_tz_localize_nonexistent_shift(start_ts, tz, end_ts, shift, tz_type, unit) without return types