docs: def is_event_of_key_string(event, key_string):
      """Condition check if key string represent the key value of handed event and whether the event is of right type
  
      The function checks for constructed event tuple that are generated by the rafcon.gui.shortcut_manager.ShortcutManager.
      :param tuple event: Event tuple generated by the ShortcutManager
      :param str key_string: Key string parsed to a key value and for condition check
      """
      return len(event) >= 2 and not isinstance(event[1], Gdk.ModifierType) and event[0] == Gtk.accelerator_parse(key_string)[0]