Each reference point of a multi-stop route can be set using one of the following ways:
A string containing the postal address of the reference point.
An array containing the latitude and longitude of the reference point.
A geometry.Point geometry describing the reference point.
Reference points on a multi-stop route can be either waypoints or throughpoints. A waypoint
signifies a stop, and waypoints divide the route into so-called paths. A throughpoint is not a stop. Thus, when passing via a throughpoint, the segment of the route path won't break.