public static function &getInstance()
{
if (self::$instance === null) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Método estático para pegar a instância da classe:
*
* @access public
* @return Object The instance of this class
* @static
*/
public static function &getInstance()
{
if (!is_object(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}