Routes
A DemandFillerIfc that drives received demands through its own internal flow and does not need an external caller (the storage-facility clone router, for example) to invoke DemandFillerIfc.fillDemand on demands sent to it.
Implementers handle the full receive → process → fill → ship cycle inside their own receive(...) override. The canonical implementer is ksl.modeling.supplychain.facility.CrossDockFacility; a future production facility that consumes raw-material demands and runs an internal recipe would also implement this.
See ksl.modeling.supplychain.facility.StorageFacilityAbstract