private Graph initExampleGraph() {
GraphHopperStorage gs = new GraphHopperStorage(new RAMDirectory(), em, true, new GraphExtension.NoOpExtension()).create(1000);
NodeAccess na = gs.getNodeAccess();
na.setNode(0, 51.1, 12.001, 50);
na.setNode(1, 51.1, 12.002, 60);
EdgeIteratorState edge = gs.edge(0, 1).
setWayGeometry(Helper.createPointList3D(51.1, 12.0011, 49, 51.1, 12.0015, 55));
edge.setDistance(100);
edge.setFlags(encoder.setReverseSpeed(encoder.setProperties(10, true, true), 15));
return gs;
}