code: def test_astype_ea_to_datetimetzdtype(self, any_numeric_ea_dtype):
      # GH37553
      ser = Series([4, 0, 9], dtype=any_numeric_ea_dtype)
      result = ser.astype(DatetimeTZDtype(tz="US/Pacific"))
  
      expected = Series(
          {
              0: Timestamp(
                  "1969-12-31 16:00:00.000000004-08:00", tz="US/Pacific"
              ),
              1: Timestamp(
                  "1969-12-31 16:00:00.000000000-08:00", tz="US/Pacific"
              ),
              2: Timestamp(
                  "1969-12-31 16:00:00.000000009-08:00", tz="US/Pacific"
              ),
          }
      )
  
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime, timedelta
  from importlib import reload
  import string
  import sys
  import numpy
  import pytest
  from pandas._libs.tslibs import iNaT
  import pandas.util._test_decorators
  from pandas import NA, Categorical, CategoricalDtype, DatetimeTZDtype, Index, Interval, NaT, Series, Timedelta, Timestamp, cut, date_range, to_datetime
  import pandas._testing
label_desc: Use image node_id 27 for calling the TestAstype obj's underlying member method code with example usage: obj.test_astype_ea_to_datetimetzdtype(any_numeric_ea_dtype) without return types