def fire_update_event(self, *args, **kwargs):
        """Trigger the method tied to _on_update"""
        for _handler in self._on_update:
            _handler(*args, **kwargs)
def fire_update_event ( self , * args , ** kwargs ) : for _handler in self . _on_update : _handler ( * args , ** kwargs )
Trigger the method tied to _on_update