code: def test_attribute_error():
      sec = Security()
      assert hasattr(sec, "tls_ca_file")
      with pytest.raises(AttributeError):
          sec.tls_foobar
      with pytest.raises(AttributeError):
          sec.tls_foobar = ""
  
imports: from __future__ import annotations
  import ssl
  from contextlib import contextmanager
  import pytest
  import dask
  from distributed.comm import connect, listen
  from distributed.security import Security
  from distributed.utils_test import gen_test, get_cert, xfail_ssl_issue5601
label_desc: Use image node_id 3 for calling a global function with example usage: test_attribute_error() without return types