public function __construct()
 {
     include 'api/chromephp/quadsChromePhp.php';
     $this->api = quadsChromePhp::getInstance();
 }
 /**
  * gets instance of this class
  *
  * @return ChromePhp
  */
 public static function getInstance()
 {
     if (self::$_instance === null) {
         self::$_instance = new quadsChromePhp();
     }
     return self::$_instance;
 }