How do I add a type to GWT’s Serialization Policy whitelist?
There’s a workaround: define a new Dummy class with member fields of all the types that you want to be included in serialization. Then add a method to your RPC interface: Dummy dummy(Dummy d); The implementation is just this: Dummy dummy(Dummy d) { return d; } And the async interface will have this: void dummy(Dummy … Read more