Call this whenever the norm is changed to notify all the callback listeners to the 'changed' signal.
(self)
| 2376 | pass |
| 2377 | |
| 2378 | def _changed(self): |
| 2379 | """ |
| 2380 | Call this whenever the norm is changed to notify all the |
| 2381 | callback listeners to the 'changed' signal. |
| 2382 | """ |
| 2383 | self.callbacks.process('changed') |
| 2384 | |
| 2385 | @property |
| 2386 | @abstractmethod |