time service contains bug, it cannot stop after edge

StgSharp.Common/Timing/TimeSpanProvider.Awaiting.cs

@@ -86,11 +86,7 @@ namespace StgSharp.Timing
         public void Dispose()
         {
             // mark provider as ended so external users can observe terminal state
-            try
-            {
-                Volatile.Write(ref _endedFlag, 1);
-            }
-            catch { }
+            Volatile.Write(ref _endedFlag, 1);
             s_unusedID.Push(TokenID);
             _event.Dispose();
             GC.SuppressFinalize(this);
@@ -211,6 +207,7 @@ namespace StgSharp.Timing
             {
                 // mark ended due to sequence timeout, then dispose
                 Volatile.Write(ref _endedFlag, 1);
+                Console.WriteLine("Time span ended.");
                 Dispose();
                 return false;
             }
@@ -238,9 +235,6 @@ namespace StgSharp.Timing
             return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        internal void Refresh() => _refreshHandler?.Invoke(this, EventArgs.Empty); // Legacy compatibility.
-
         ~TimeSpanProvider() => Dispose();
 
     }