Airship\Cabin\Bridge\Blueprint\ChannelUpdates::getChannelUpdates PHP Method

    protected function getChannelUpdates(string $root) : array
    {
        $state = State::instance();
        if (IDE_HACKS) {
            $state->hail = new Hail(new Client());
        }
        foreach ($this->getChannelURLs() as $url) {
            $initiated = new \DateTime('now');
            $response = $state->hail->postSignedJSON($url . API::get('fetch_keys') . '/' . $root, $this->channelPublicKey);
            try {
                // We use a separate method for parsing this update:
                return $this->parseChannelUpdateResponse($response, $initiated);
            } catch (CouldNotUpdate $ex) {
                // Log the error message:
                $this->log($ex->getMessage(), LogLevel::ALERT, \Airship\throwableToArray($ex));
                // continue;
            }
        }
        // When all else fails, TransferException
        throw new TransferException(\__("All else has failed."));
    }