public function getEvents(string $host, string $key, int $ts) {
        $params = array(
            static::PARAM_KEY  => $key,
            static::PARAM_TS   => $ts,
            static::PARAM_WAIT => $this->wait,
            static::PARAM_ACT  => static::VALUE_ACT
        );

        try {
            $response = $this->http_client->get($host, $params);
        } catch (TransportRequestException $e) {
            throw new VKClientException($e);
        }

        return $this->parseResponse($params, $response);
    }