human
Solve the following python programming problem given the following code:
@ mock.patch ('django.contrib.contenttypes.models.ContentTypeManager.get_or_create') 
@ mock.patch ('django.contrib.contenttypes.models.ContentTypeManager.get') 
def test_message_if_get_for_model_fails(self, mocked_get, mocked_get_or_create) : 
    '
        Check that `RuntimeError` with nice error message is raised if
        `get_for_model` fails because of database errors.
        ' 
    def _test_message(mocked_method) : 
        for ExceptionClass in (IntegrityError, OperationalError, ProgrammingError) : 
            mocked_method.side_effect = ExceptionClass 
            with self.assertRaisesMessage (RuntimeError, 'Error creating new content types. Please make sure contenttypes is migrated before trying to migrate apps individually.') : 
                ContentType.objects.get_for_model (ContentType) 
_test_message (mocked_get) 
    mocked_get.side_effect = ContentType.DoesNotExist 
    _test_message (_test_message) 

    
    

    Fix the buggy line: _test_message (_test_message)
assistant
#Here is Python code to fix the buggy line: _test_message (_test_message)
.

_test_message (mocked_get_or_create)