added OnEnd()

TYTD.Api/MyClass.cs

@@ -40,7 +40,11 @@ namespace TYTD
         {
 
         }
-        public bool TimerEnabled { get { if (t != null) { return t.Enabled; } else { return false; } } set { if (t != null) { t.Enabled = value; } } }
+        public virtual void OnEnd()
+        {
+
+        }
+                public bool TimerEnabled { get { if (t != null) { return t.Enabled; } else { return false; } } set { if (t != null) { t.Enabled = value; } } }
         public virtual IEnumerable<KeyValuePair<string, string>> GetUrls()
         {
             yield return new KeyValuePair<string, string>("Home",$"api/Extensions/{Name}");
@@ -85,6 +89,7 @@ namespace TYTD
             {
                 t.Dispose();
             }
+            OnEnd();
         }
     }