public function loadMorph($relation, $relations)
    {
        $this->pluck($relation)
            ->filter()
            ->groupBy(function ($model) {
                return get_class($model);
            })
            ->each(function ($models, $className) use ($relations) {
                static::make($models)->load($relations[$className] ?? []);
            });

        return $this;
    }