def register_event(self, event, callback):
    self.callbacks[event] = callback
GET /assets/id.json (group)
dataset/ETHPy150Open bloomreach/briefly/src/briefly/node.py/Node.register_event--crossover with--dataset/ETHPy150Open typepad/python-typepad-api/tests/test_typepad.py/TestGroup.test_1_GET_assets_id__using_id