- add clearMultitonInstance method to sample

Debug.LightweightIocContainer.FactoryGenerator/SampleClass.cs

@@ -16,4 +16,6 @@ public interface ISampleClassFactory
     ISampleClass Create(string name);
     T Create<T, U, V>(U param1, V param2) where T : ISampleClass where U : class, new() where V : struct;
     Task<T> CreateAsync<T, U>(U parameter) where T : ISampleClass where U : class;
+    
+    void ClearMultitonInstance<T>() where T : ISampleClass;
 }