public function setUp()
    {
        $base_uri = $this->getServiceConfig('base_uri');
        $guzzle_client_config = $this->getConfig('guzzle_client_config', []);
        if (!ends_with($base_uri, '/')) {
            $base_uri .= '/';
        }
        $this->printLine("REST CLIENT BASE URI: " . $base_uri);
        $this->client = new Client(array_merge($guzzle_client_config, [
            'base_uri' => $base_uri,
            'exceptions' => false,
        ]));
    }