def action(self, entity, action, attributes, extras):
        raise AttributeError('Currently not supported.')
Testing hook registration with already registered callback
dataset/ETHPy150Open tmetsch/occi-os/occi_os_api/backends/network.py/NetworkBackend.action--crossover with--dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/extensions/tests.py/APIExtraDataAccessHookTests.test_register_hook_already_registered