- `notify (OBJ, EVENT)`
- `notify (OBJ, EVENT, DATA)`

Notify listeners that `EVENT` occurred on `OBJ`.

Optional event data may be supplied and passed to registered listeners.

See also: `addlistener`, `events`.

### References

- https://www.mathworks.com/help/matlab/ref/notify.html
- https://octave.sourceforge.io/octave/function/notify.html