private static HopDirective createRouteDirective(String s) {
        return new RouteDirective(s);
    }
This replaces the incredibly slow javacc RouteParser.jj. It is a has its c++ sibling and
the implementation is a a copy of the C++ version.
@author baldersheim
@since 5.2
messagebus/src/main/java/com/yahoo/messagebus/routing/RouteParser.java