@Override
    public Set<Class<? extends ProviderOptimizationStrategy>> applyPost() {
        return Collections.singleton(TinkerGraphStepStrategy.class);
    }
This strategy will do a graph size call if the traversal is a count of the vertices and edges of the graph
or a one-to-one map chain thereof.

@author Marko A. Rodriguez (http://markorodriguez.com)
@example <pre>
g.V().count()               // is replaced by TinkerCountGlobalStep
g.V().map(out()).count()    // is replaced by TinkerCountGlobalStep
g.E().label().count()       // is replaced by TinkerCountGlobalStep
</pre>
tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/process/traversal/strategy/optimization/TinkerGraphCountStrategy.java