284      * @param bool $modified Should be set to true, if this event handler
288     function beforeWriteContent($path, DAV\IFile $node, &$data, &$modified) {  argument
293         $this->validateVCard($data, $modified);
306      * @param bool $modified Should be set to true, if this event handler
310     function beforeCreateFile($path, &$data, DAV\ICollection $parentNode, &$modified) {  argument
315         $this->validateVCard($data, $modified);
325      * @param bool $modified Should be set to true, if this event handler
329     protected function validateVCard(&$data, &$modified) {  argument
341         if (md5($data) !== $before) $modified = true;
353                 $modified = true;
372             $modified = true;