code: def is_shortcut_in_use(self, shortcut):
          
  
          for path, actionName, action in foundations.walkers.dictionaries_walker(self.__categories):
              if action.shortcut() == QKeySequence(shortcut):
                  return True
          return False
docs: Returns if given action shortcut is in use.
  
          :param name: Action shortcut.
          :type name: unicode
          :return: Is shortcut in use.
          :rtype: bool