protected function getCrawler(int $year)
	{
		$getter = 'getters.uf.' . $this->getter;
		$url = str_replace('<year>', $year, config($getter . '.part'));
		try {
			$request = $this->client->request('GET', $url);
		} catch (ClientException $e) {
			return false;
		}

		if ($request->getStatusCode() != 200) {
			return false;
		}
		$client = new GClient();
		$uri = config($getter . '.url') . $url;
		$crawler = $client->request('GET', $uri);
		return $crawler;
	}