def METHOD_NAME(self, event):
    def print_reload():
        print("Reloading scene")
        self.reload()
    if event.src_path in self._files_to_watch:
        print("Change detected in %s" % event.src_path)
        if self._timer is not None:
            self._timer.cancel()
        self._timer = Timer(MIN_RELOAD_INTERVAL, print_reload, ())
        self._timer.start()