/**
  * put your comment there...
  * 
  * @param mixed $extensionData
  * @return CJTProUpdateCheck
  */
 public function __construct()
 {
     # Get Services API instance
     $this->servicesAPI =& CJTServicesClient::getInstance();
     # Obtain module name from $this class name with CJT prefix removed
     $this->moduleName = strtolower(substr(get_class($this), 3));
 }
 /**
  * put your comment there...
  * 
  * @return CJTServicesClient
  */
 public static function &getInstance()
 {
     # Maintain only ONE instance
     if (!self::$instance) {
         self::$instance = new CJTServicesClient();
     }
     return self::$instance;
 }