Looking at this example and had a few questions.https://developers.arcgis.com/javascript/jssamples/routetask_closest_facility.html1. I see that it is creating 5 square graphics to route against. How do I add my own Service here2. I dont see how the routing is referencing the Square Graphics added (would like to change this to my own point feature)3. Is there anything else I would have to configure on my server?4. Do I need to create my own proxy?urlUtils.addProxyRule({
urlPrefix: "route.arcgis.com",
proxyUrl: "/sproxy"
});
closestFacilityTask = new ClosestFacilityTask("http://route.arcgis.com/arcgis/rest/services/World/ClosestFacility/NAServer/ClosestFacility_World");
registry.byId("numLocations").on("change", function() {
params.defaultTargetFacilityCount = this.value;
clearGraphics();
});