public function withSpecsCategory(?int $numberOfSpecsCategories = 3): self 	{ 		return $this->afterCreating(function (Product $product) use ($numberOfSpecsCategories) { 			$specsCategories = SpecsCategory::factory()->count($numberOfSpecsCategories)->create([ 				'market_id' => $product->market_id, 			]); 			$product->specsCategories()->attach($specsCategories->pluck('id')); 		}); 	}