@Override
    protected List<Traversal> getTraversals() {
        return Arrays.asList(
                __.math("a+b"),
                __.math("a+b").by("age"),
                __.math("a/b").by("age"),
                __.math("a+b").by("age").by(both().count()),
                __.math("sin a + b")
        );
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/MathStepTest.java