Relation that will get the newest (or oldest) item

New in Laravel 8.42: In an Eloquent model can define a relation that will get the newest (or oldest) item of another relation.

public function historyItems(): HasMany
{
    return $this
        ->hasMany(ApplicationHealthCheckHistoryItem::class)
        ->orderByDesc('created_at');
}
 
public function latestHistoryItem(): HasOne
{
    return $this
        ->hasOne(ApplicationHealthCheckHistoryItem::class)
        ->latestOfMany();
}