Пример гоночки

Assets/Code/Infrastructure/UI/UIPanel.cs

@@ -1,3 +1,4 @@
+using System;
 using UnityEngine;
 
 namespace Code.Infrastructure.UI
@@ -6,7 +7,7 @@ namespace Code.Infrastructure.UI
     {
         [SerializeField] protected bool injectMeSenpai;
         public bool InjectMeSenpai => injectMeSenpai;
-        public abstract void Open();
-        public abstract void Close();
+        public abstract void Open(Action callback = null);
+        public abstract void Close(Action callback = null);
     }
 }