Geocoder\Provider\ArcGISOnline::executeQuery PHP Method

    private function executeQuery($query)
    {
        $query = $this->buildQuery($query);
        $request = $this->getMessageFactory()->createRequest('GET', $query);
        $content = (string) $this->getHttpClient()->sendRequest($request)->getBody();
        if (empty($content)) {
            throw new NoResult(sprintf('Could not execute query "%s".', $query));
        }
        $json = json_decode($content);
        // API error
        if (!isset($json)) {
            throw new NoResult(sprintf('Could not execute query "%s".', $query));
        }
        return $json;
    }