public function up(): void 	{ 		Schema::create('delivery_pricelists', static function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->json('countries')->nullable(); 			$table->unsignedDouble('up_to_2_kg_price')->default(0); 			$table->unsignedDouble('up_to_5_kg_price')->default(0); 			$table->unsignedDouble('up_to_10_kg_price')->default(0); 			$table->unsignedDouble('up_to_15_kg_price')->default(0); 			$table->unsignedDouble('up_to_20_kg_price')->default(0); 			$table->unsignedDouble('up_to_25_kg_price')->default(0); 			$table->unsignedDouble('up_to_31_5_kg_price')->default(0); 			$table->timestamps(); 			$table->index(Model::CREATED_AT); 		}); 	}