how to expose class names when serializing with Gson

Question

My scenario is very complicated but here\'s a summary:

I\'m trying to understand source of a compiler -- and to understand what each AST node represents, I\'m generating

Answer 1

Check runtimeAdapter ,

 RuntimeTypeAdapter nodeAdapter = RuntimeTypeAdapter.create(Node.class,"type");
 nodeAdapter.registerSubtype(Begin.class,"Begin");
 nodeAdapter.registerSubtype(State.class,"State");
 gsonBuilder.registerTypeHierarchyAdapter(Class.class, new GsonClassAdapter())
            .registerTypeAdapter(Node.class,nodeAdapter )
            .enableComplexMapKeySerialization().setPrettyPrinting();
 gson = gsonBuilder.create();