@Override
        public String toString() {
            return "applyPartitionFilter";
        }
Takes the result of a {@link Map} containing {@link Property} lists and if the property is a
{@link VertexProperty} it applies a filter based on the current partitioning.  If is not a
{@link VertexProperty} the property is simply passed through.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/decoration/PartitionStrategy.java