_formatQuickReplies(quickReplies) {
    return quickReplies && quickReplies.map((reply) => {
      if (typeof reply === 'string') {
        return {
          content_type: 'text',
          title: reply,
          payload: 'BOOTBOT_QR_' + normalizeString(reply)
        };
      } else if (reply && reply.title) {
        return Object.assign({
          content_type: 'text',
          payload: 'BOOTBOT_QR_' + normalizeString(reply.title)
        }, reply);
      }
      return reply;
    });
  }
Used to format QuickReply objects or titles into the correct format to be consumed by the Facebook API.
@param {Array.<QuickReply|String>} quickReplies