public function rules(): array 	{ 		return [ 			'name_en' => ['required', 'string', 'max:50'], 			'name_de' => ['nullable', 'string', 'max:50'], 			'name_fr' => ['nullable', 'string', 'max:50'], 			'name_es' => ['nullable', 'string', 'max:50'], 			'color_variants' => ['array'], 			'color_variants.*' => ['required', 'uuid', 'exists:variants,id'], 		]; 	}