public String getHopSuffix() {
        return getHop().getSuffix(directive);
    }
<p>Returns the remainder of the route string immediately following the
active policy directive. This is the same as calling {@link
#getHop()}.getSuffix({@link #getDirectiveIndex()}).</p>

@return The hop suffix.
messagebus/src/main/java/com/yahoo/messagebus/routing/RoutingContext.java