add methods

src-examples/ProxyInterfaceConsumer/Program.cs

@@ -1,11 +1,15 @@
-namespace SourceGeneratorInterface
+using System;
+
+namespace SourceGeneratorInterface
 {
     public class Program
     {
         public static void Main()
         {
-            IPerson ip = null;
-            //var i = ip.Id;
+            PersonProxy p = new PersonProxy(new Person());
+            p.Name = "test";
+            p.Add("x");
+            Console.WriteLine(System.Text.Json.JsonSerializer.Serialize(p));
         }
     }
 }