Monobjc.AppKit.ActionDispatcher.AddHandler C# (CSharp) Метод

        public static void AddHandler(IActionProvider provider, ActionEventHandler handler)
        {
            ActionDispatcher dispatcher;
            if (map.ContainsKey(provider))
            {
                dispatcher = map[provider];
            }
            else
            {
                dispatcher = new ActionDispatcher(provider);
                map.Add(provider, dispatcher);
            }
            dispatcher.ActionEvent += handler;
        }