Method unreadComment

api/server/models/User.ts:1381–1394

({ userId, commentId })

  }

  public static async unreadComment({ userId, commentId }) {
    if (!userId || !commentId) {
      throw new Error('Bad data.');
    }

    await this.updateOne(
      { _id: userId },
      {
        $push: {
          unreadCommentIds: commentId,
        },
      },
    );
  }

  // marks one Comment as unread for participants of Discussion
  public static async markCommentAsUnreadForParticipantsOfDiscussionAfterCommentIsAdded({