/**
* Returns an instance of __CLASS__
*
* Singleton pattern implementation
*
* @param array|Zend_Config|null $options (Optional) Options to set
* @return __CLASS__ Provides a fluent interface
*/
public static function getInstance($options = null)
{
if (self::$_instance === null) {
self::$_instance = new self($options);
}
return self::$_instance;
}
