def _segue_to(self, activity: Activity, segue_type):
if len(self.stack) > 0:
if segue_type == Segue.REPLACE:
current_activity = self.stack.pop()
else:
current_activity = self.stack[-1]
current_activity._stop()
current_activity.on_stop()
self.unsubscribe_all(current_activity)
self.stack.append(activity)
activity._start(application=self)
