@Override
        public Traversal<Vertex, Vertex> get_g_V_chooseXoutE_count_isX0X__asXaX__asXbXX_chooseXselectXaX__selectXaX__selectXbXX() {
            return g.V().choose(__.outE().count().is(0L), __.as("a"), __.as("b")).choose(__.select("a"), __.select("a"), __.select("b"));
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
@author Stephen Mallette (http://stephen.genoprime.com)
@author Daniel Kuppitz (http://gremlin.guru)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/SelectTest.java