return url;
            }
            return null;
        }).filter(s -> s != null).collect(Collectors.joining(", "));
        if (refs.isEmpty()) {
            return msg.getContent();
        }
        return "[References: " + refs + "]";
    }

    /**
     * Builds a truncated version of the assistant message content.
     *
     * @param msg the assistant chat message

      </searchConfiguration>

\t]*)(title))?\s*\)/).replace("label",D).replace("href",/<(?:\\.|[^\n<>\\])+>|[^ \t\n\x00-\x1f]*/).replace("title",/"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/).getRegex(),ke=k(/^!?\[(label)\]\[(ref)\]/).replace("label",D).replace("ref",F).getRegex(),de=k(/^!?\[(ref)\](?:\[\])?/).replace("ref",F).getRegex(),lt=k("reflink|nolink(?!\\()","g").replace("reflink",ke).replace("nolink",de).getRegex(),re=/[hH][tT][tT][pP][sS]?|[fF][tT][pP]/,X={_backpedal:L,anyPunctuation:rt,autolink:st,blockSkip:K...

constructor.<br />\n * These can be overridden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass an object with the same\n * structure of the `options` object, as the 3rd argument. For example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement.\n   * @prop {Popper.placements} placement='bottom'\n...