@Override
    public String toString() {
        if (isPresent()) {
            String score = StringUtil.toString(this.score);
            if (hasHighestScore()) {
                score += " (highest)";
            } else if (hasLowestScore()) {
                score += " (lowest)";
            }
            return MoreObjects.toStringHelper(this).omitNullValues()
                              .add("type", type)
                              .add("path", path)
                              .add("query", query)
                              .add("pathParams", pathParams)
                              .add("score", score)
                              .add("negotiatedResponseMediaType", negotiatedResponseMediaType)
                              .toString();
        } else {
            return getClass().getSimpleName() + "{<empty>}";
        }
    }
Returns the negotiated producible media type.
core/src/main/java/com/linecorp/armeria/server/RoutingResult.java