@Override
        public void setMetrics(final MutableMetrics parentMetrics) {
            if (parentMetrics != null) {
                callbackCalled = true;
                parentMetrics.setCount("bogusCount", 100);
            }
        }
ProfileStrategy callback test. Goal: ensure that a step that implements Profileable gets a callback to setMetrics
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/ProfileTest.java