public function rules(): array 	{ 		$current_domain = auth()->user()->user->getActiveDomain();  		$validation_rule_builder = [];  		foreach (DomainLanguages::cases() as $language) { 			$lang = $language->value; 			$required = $lang === $current_domain->main_language;  			$validation_rule_builder['title_' . $lang] = [$required ? 'required' : 'nullable', 'string', 'max:250']; 		}  		return $validation_rule_builder; 	}