@Override
        public String toString()
        {
            return "Inner [propAll=" + propAll + ", prop1a=" + prop1a
                    + ", prop1b=" + prop1b + ", prop2a=" + prop2a + ", prop2b="
                    + prop2b + ", prop3a=" + prop3a + ", prop3b=" + prop3b
                    + ", prop1and2a=" + prop1and2a + ", prop1and2b="
                    + prop1and2b + ", prop1and3a=" + prop1and3a
                    + ", prop1and3b=" + prop1and3b + ", prop2and3a="
                    + prop2and3a + ", prop2and3b=" + prop2and3b + "]";
        }
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