code: def test_tz_localize_nonexistent_invalid_arg(self, warsaw):
      # GH 22644
      tz = warsaw
      ts = Timestamp("2015-03-29 02:00:00")
      msg = (
          "The nonexistent argument must be one of 'raise', 'NaT', "
          "'shift_forward', 'shift_backward' or a timedelta object"
      )
      with pytest.raises(ValueError, match=msg):
          ts.tz_localize(tz, nonexistent="foo")
  
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 7 for calling the TestTimestampTZLocalize obj's underlying member method code with example usage: obj.test_tz_localize_nonexistent_invalid_arg(warsaw) without return types