code: def test_sealed_exception_has_attribute_name(self):
      m = mock.Mock()
  
      mock.seal(m)
      with self.assertRaises(AttributeError) as cm:
          m.SECRETE_name
      self.assertIn("SECRETE_name", str(cm.exception))
  
imports: import unittest
  from unittest import mock
label_desc: Use image node_id 16 for calling the TestSealable obj's underlying member method code with example usage: obj.test_sealed_exception_has_attribute_name() without return types