public void select(RoutingContext ctx) {
        Route route = new Route(ctx.getRoute());
        route.setHop(0, getRecipient(ctx));
        ctx.addChild(route);
    }
Constructs a policy that will choose local services that match the slobrok pattern in which this policy occurred.
If no local service can be found, this policy simply returns the asterisk to allow the network to choose any.

@param param The address to use for this, if empty this will resolve to hostname.
documentapi/src/main/java/com/yahoo/documentapi/messagebus/protocol/LocalServicePolicy.java