code: def test_fullmatch_na_kwarg(any_string_dtype):
      ser = Series(
          ["fooBAD__barBAD", "BAD_BADleroybrown", np.nan, "foo"],
          dtype=any_string_dtype,
      )
      result = ser.str.fullmatch(".*BAD[_]+.*BAD", na=False)
      expected_dtype = (
          np.bool_
          if any_string_dtype in object_pyarrow_numpy
          else "boolean"
      )
      expected = Series(
          [True, False, False, False], dtype=expected_dtype
      )
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime
  import re
  import numpy
  import pytest
  from pandas.errors import PerformanceWarning
  import pandas.util._test_decorators
  import pandas
  from pandas import Series, _testing
  from pandas.tests.strings import _convert_na_value, object_pyarrow_numpy
label_desc: Use image node_id 38 for calling a global function with example usage: test_fullmatch_na_kwarg(any_string_dtype) without return types