static Ent_Location newLocation(String code)
    {
        Ent_Location location = new Ent_Location();
        location.code = code;
        return location;
    }
The fields are filtered dependending on the Tag annotation {@link Tag#groupFilter()}.

@author David Yu
@created Feb 11, 2013
protostuff-runtime/src/test/java/io/protostuff/runtime/FilterFieldsByGroupTest.java