@Test
    public void shouldCallTrivialFunction() {
        final ScriptEngineLambda lambda = newLambda("2 + 2");
        assertEquals(lambda.apply("foo"), 4);
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/jsr223/ScriptEngineLambdaTest.java