def add_callback_to_shortcut_manager(self, action, callback):
        """
        Helper function to add an callback for an action to the shortcut manager.
        :param action: the action to add a shortcut for
        :param callback: the callback if the action is executed
        :return:
        """
        if action not in self.registered_shortcut_callbacks:
            self.registered_shortcut_callbacks[action] = []
        self.registered_shortcut_callbacks[action].append(callback)
        self.shortcut_manager.add_callback_for_action(action, callback)
Helper function to add an callback for an action to the shortcut manager.
        :param action: the action to add a shortcut for
        :param callback: the callback if the action is executed
        :return: