How do I determine which id the line is from the obtained route?
document API: https://developers.arcgis.com/javascript/latest/api-reference/esri-rest-support-ClosestFacilityParameters.html
const facilities = [ { id: "a", center: [-122.67484, 45.52087], }, { id: "b", center: [-122.68365, 45.52327], }, { id: "c", center: [-122.66406, 45.52378], }, { id: "d", center: [-122.6631, 45.52093], }, { id: "e", center: [-122.66208, 45.5197], }, { id: "f", center: [-122.66247, 45.51845], }, { id: "g", center: [-122.66299, 45.51827], }, ];