public function __construct($code, \Exception $cause = NULL)
 {
     parent::__construct($code, $cause);
 }
 public function __construct(\Exception $cause = NULL)
 {
     parent::__construct(WebDav::CODE_FORBIDDEN, $cause);
 }
 public function __construct(array $uris, \Exception $cause = NULL)
 {
     parent::__construct(WebDav::CODE_LOCKED, $cause);
     $this->uris = $uris;
 }
 public function __construct(\Exception $cause = NULL)
 {
     parent::__construct(WebDav::CODE_UNSUPPORTED_MEDIA_TYPE, $cause);
 }