@Override
        public void execute(Vertex vertex, Messenger messenger, Memory memory) {
            assertEquals(memory.getIteration() * 6, memory.<Integer>get("test").intValue());
            memory.add("test", 1);
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/computer/GraphComputerTest.java