Returns if given action shortcut is in use.

        :param name: Action shortcut.
        :type name: unicode
        :return: Is shortcut in use.
        :rtype: bool

def is_shortcut_in_use(self, shortcut):
        """
        Returns if given action shortcut is in use.

        :param name: Action shortcut.
        :type name: unicode
        :return: Is shortcut in use.
        :rtype: bool
        """

        for path, actionName, action in foundations.walkers.dictionaries_walker(self.__categories):
            if action.shortcut() == QKeySequence(shortcut):
                return True
        return False