private function apiCall($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: " . $this->_apiPassword));
$curl_results = curl_exec($ch);
curl_close($ch);
return $curl_results;
}