public async view(id) : Promise<Document> {
     if (!Types.ObjectId.isValid(id)) {
         throw new Error('Unknown Record');
     }
     let paths = this.getPathsToPopulate();
     return await this.Model.findById(id).populate(paths.join(', ')); 
 }

router.param('id', async (req, res, next, id) => {
    if (!Types.ObjectId.isValid(id)) {
        return next();
    }
    try {
        (req as any).object = await read(id);
        next();
    } catch (error) {
        next(error)
    }
});

 public async read(id) {
     if (!Types.ObjectId.isValid(id)) {
         throw new Error('Unknown Record');
     }
     return await this.Model.findById(id).exec();
 }

GameSchema.statics.findGame = async (id: string): Promise<IGameDocument> => {
  if (Types.ObjectId.isValid(id)) {
    return await await GameModel.findById(id);
  }
}

 private toObjectId(_id: string): Types.ObjectId {
     return Types.ObjectId.createFromHexString(_id);
 }