builder.addVehicle(v2);
Service s1 = Service.Builder.newInstance("1").addSizeDimension(0, 1).setLocationId("loc").setServiceTime(2.0).build();
Service s2 = Service.Builder.newInstance("2").addSizeDimension(0, 1).setLocationId("loc2").setServiceTime(4.0).build();
VehicleRoutingProblem vrp = builder.addJob(s1).addJob(s2).build();
new VrpXMLWriter(vrp, null).write(infileName);
VehicleRoutingProblem.Builder vrpToReadBuilder = VehicleRoutingProblem.Builder.newInstance();
new VrpXMLReader(vrpToReadBuilder, null).read(infileName);
VehicleRoutingProblem readVrp = vrpToReadBuilder.build();