A generic parameterized Method is not possible. Class<T> gets reduced to Class, generic parameter name is not accepted ---------------------------------------------------------------------------------------------------------------------- Key: ROASTER-48 URL: https://issues.jboss.org/browse/ROASTER-48 Project: Roaster Issue Type: Bug Reporter: Yusuf Iskenderoglu What I need is something like this: {code} final MethodSource<JavaClassSource> newMethod = to.addMethod() .setName(name) .setPublic() .setFinal(true); newMethod.addTypeVariable("T"); newMethod.setReturnType("T").setBody(localBody + ".as(((Class<T>) as));"); newMethod.addParameter(int.class, "index"); newMethod.addParameter("Class<T>", "as"); {code} However, roaster reduces *Class<T>* to *Class*. In that case, the method returns only "Object", because the type information cannot be deduced anymore, causes ugly Code on the caller side: {code} app().financing.desires(0, Foo.class).programNumber; vs. Foo k = (Foo) app().financing.desires(0, Foo.class); k.programNumber {code} Further, a parameter with the name *T* is not accepted at all, even if its defined as a type variable. Would be very nice, if you could solve this issue :-)