@Override
        public Traversal<Integer, Map<String, Object>> get_g_injectX10_20_null_20_10_10X_groupCountXxX_dedup_asXyX_projectXa_bX_by_byXselectXxX_selectXselectXyXXX() {
            return g.inject(10,20,null,20,10,10).groupCount("x").
                     dedup().as("y").
                     project("a","b").
                       by().
                       by(__.select("x").select(__.select("y")));
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/InjectTest.java