Creating MoveListFactory with GenuineVariableDescriptor - optaplanner

Question

I'm working on a variant of the VRP Routing Problem with chained graphs. I'm implementing a move that takes two entities on a chain, but are not a subchain themselves, and moves them to a new different chain. This invloves a GenuineVariableDescriptor as shown here.
public ChangeVehicleMove(Object entity, GenuineVariableDescriptor variableDescriptor, Object toPlanningValue)
I'm using this move to implementing a custom MoveListFactory. I'm having trouble generating a GenuineVariableDescriptor. What is the best way to do this?
The move factory:
public class ChangeVehicleMoveFactory implements MoveListFactory{
#Override
public List<? extends Move> createMoveList(Solution solution) {
List<Customer> customerList = ((RoutingSolution) solution).getCustomerList();
Iterator<Customer> customerIterator1 = customerList.iterator(), customerIterator2 = customerList.iterator();
List<Move> moveList = new ArrayList<Move>();
Customer customer1, customer2;
Class<?> c = ((RoutingSolution) solution).getCustomerList().getClass();
GenuineVariableDescriptor genuineVariableDescriptor = null;
try {
genuineVariableDescriptor = new GenuineVariableDescriptor(new EntityDescriptor(new SolutionDescriptor(RoutingSolution.class), TimeWindowedCustomer.class), new FieldMemberAccessor(c.getField("previousStandStill")));
} catch (NoSuchFieldException e) {
e.printStackTrace();
}
if (genuineVariableDescriptor != null){
while (customerIterator1.hasNext()) {
while (customerIterator2.hasNext()) {
customer1 = customerIterator1.next();
customer2 = customerIterator2.next();
if (customer1 != customer2 && !customer1.isAssigned())
new ChangeVehicleMove(customer1, genuineVariableDescriptor, customer2);
}
}
}
return null;
}
}
Another possibility is to include the move as part of the move list in the configuration. There is very little documentation on this. if this route is a better approach, how would you include that in the configuration file?