@Override
        public Set<MemoryComputeKey> getMemoryComputeKeys() {
            return new HashSet<>(Arrays.asList(
                    MemoryComputeKey.of("a", Operator.sum, true, false),
                    MemoryComputeKey.of("b", Operator.sum, true, false),
                    MemoryComputeKey.of("c", Operator.and, true, false),
                    MemoryComputeKey.of("d", Operator.or, true, false),
                    MemoryComputeKey.of("e", Operator.and, true, false),
                    MemoryComputeKey.of("f", Operator.assign, true, false)));
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/computer/GraphComputerTest.java