for (int i = 0; i < branchSize; i++) {
final Vertex a = graph.addVertex();
start.addEdge(graphProvider.convertLabel("test1"), a);
for (int j = 0; j < branchSize; j++) {
final Vertex b = graph.addVertex();
a.addEdge(graphProvider.convertLabel("test2"), b);
for (int k = 0; k < branchSize; k++) {
final Vertex c = graph.addVertex();
b.addEdge(graphProvider.convertLabel("test3"), c);
}
}