void route(PointerEvent event)

Calls the routes registered for this pointer event.

Routes are called in the order in which they were added to the PointerRouter object.

Source 

void route(PointerEvent event) {
  LinkedHashSet<PointerRoute> routes = _routeMap[event.pointer];
  List<PointerRoute> globalRoutes = new List<PointerRoute>.from(_globalRoutes);
  if (routes != null) {
    for (PointerRoute route in new List<PointerRoute>.from(routes)) {
      if (routes.contains(route))
        _dispatch(event, route);
    }
  }
  for (PointerRoute route in globalRoutes) {
    if (_globalRoutes.contains(route))
      _dispatch(event, route);
  }
}