AlternativeRouteIntersection
Valid only until RoutesObserver or NavigationRouteAlternativesObserver fires again.
Parameters
location
intersection point between the primary and alternative route
geometryIndexInRoute
geometry index of the intersection point (based on referenced route's geometry)
geometryIndexInLeg
geometry index of the intersection point (based on referenced route leg's geometry)
legIndex
index of the leg where the intersection point is found (based on the referenced route)