LMongo\Eloquent\Model::find PHP Method

    public static function find($id, $columns = array())
    {
        $instance = new static();
        if (is_array($id)) {
            $id = array_map(function ($value) {
                return $value instanceof MongoID ? $value : new MongoID($value);
            }, $id);
            return $instance->newQuery()->whereIn($instance->getKeyName(), $id)->get($columns);
        }
        return $instance->newQuery()->find($id, $columns);
    }