The goal of this library is to provide a succinct DSL-like way to build generators for deferred binding in GWT without resorting to literal strings.
"Self explanatory" silly example:

@Override
protected void generate(GeneratedClassDefinition classDef) {

    classDef.addNestedInterface(defineInterface("MyNestedInterface").thatExtends(Superinterface.class).withMethods(
        defineMethod("interfaceMethod").annotatedWith(AnAnnotation.class).withParams(
            defineParam(template(type(GenericType.class), TypeParameter.class), "parameter")
        )
    );

    classDef.addNestedClass(defineClass("NestedClass").thatExtends(Superclass.class).withFields(
            defineField(template(type(List.class), type("MyNestedInterface")), "listField")
        ).withMethods(
            defineMethod(type(List.class), "getList").withBody(returnValue("listField"))
        )
    );

    classDef.getConstructor().addToBody(
        callMethod("frobnicate", classLiteral(type("MyNestedInterface")),
            newAnonymousClass(type("MyNestedInterface")).withFields(
                    defineField(type(FieldType.class), "field").assignValue(callMethod(SomeClass.class, "staticMethod"))
                ).withMethods(
                    defineMethod("doSomething").withParams(
                        defineParam(ParamType.class, "param")
                ).withBody(
                    callMethod("field.someMethod", "param")
                )
            )
        )
    );

}