def METHOD_NAME(self):
    with self.fresh_table_manager() as table_manager:
        bank_id = self._create_bank()
        member_key = "fooofofofofoof"
        self._add_photo_bank_member_with_key(table_manager, bank_id, member_key)
        with self.assertRaises(KeyError):
            self._add_photo_bank_member_with_key(table_manager, bank_id, member_key)