@Override
    public String toString() {
        if (isPresent()) {
            return MoreObjects.toStringHelper(this)
                                  .add("route", route)
                                  .add("routingResult", routingResult)
                                  .add("value", value)
                                  .toString();
        } else {
            return getClass().getSimpleName() + "{<empty>}";
        }
    }
Returns the value.

@throws IllegalStateException if there's no match
core/src/main/java/com/linecorp/armeria/server/Routed.java