public static void AddResearchListener(UnityAction<bool> handler)
 {
     listenerResearch = handler;
     if (invokerResearch != null)
     {
         invokerResearch.AddReserachListener(listenerResearch);
     }
 }
 public static void AddResearchInvoker(TimerCountdown script)
 {
     invokerResearch = script;
     if (listenerResearch != null)
     {
         invokerResearch.AddReserachListener(listenerResearch);
     }
 }