func lookupAvoid(avoid string, r *maps.DistanceMatrixRequest) {
switch avoid {
case "tolls":
r.Avoid = maps.AvoidTolls
case "highways":
r.Avoid = maps.AvoidHighways
case "ferries":
r.Avoid = maps.AvoidFerries
case "":
// ignore
default:
log.Fatalf("Unknown avoid restriction %s", avoid)
}
}
