@Override
    public void configure(final Object... keyValues) {
        if (!ShortestPath.configure(this, (String) keyValues[0], keyValues[1])) {
            this.parameters.set(this, keyValues);
        }
    }
@author Daniel Kuppitz (http://gremlin.guru)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/computer/traversal/step/map/ShortestPathVertexProgramStep.java