belongsTo(Plant::class); } public function stickerMaster(): BelongsTo { return $this->belongsTo(StickerMaster::class); } public function stickerMasterRelation() { return $this->belongsTo(StickerMaster::class, 'sticker_master_id'); } public function prunable(): Builder { return static::where('created_at', '<=', now()->subMonthsNoOverflow(6)); } }