docs: def remove_all_callbacks(self):
          """
          Remove all callbacks registered to the shortcut manager
          :return:
          """
          for action in self.registered_shortcut_callbacks.keys():
              for callback in self.registered_shortcut_callbacks[action]:
                  self.shortcut_manager.remove_callback_for_action(action, callback)
          # delete all registered shortcut callbacks
          self.registered_shortcut_callbacks = {}