public function removeChannel($bridgeId, $channel)
    {
        $uri = "bridges/$bridgeId/removeChannel";
        try {
            $this->client->getEndpoint()->post($uri, [
                'form_params' => [
                    'channel' => $channel,
                ]
            ]);
        } catch (RequestException $e) {
            $this->processRequestException($e);
        }
    }