public Builder initialVoteStrength(final Traversal.Admin<Vertex, ? extends Number> initialVoteStrengthTraversal) {
            PureTraversal.storeState(this.configuration, INITIAL_VOTE_STRENGTH_TRAVERSAL, initialVoteStrengthTraversal);
            return this;
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/computer/clustering/peerpressure/PeerPressureVertexProgram.java