285      * @param bool $modified Should be set to true, if this event handler
289     function beforeWriteContent($path, DAV\IFile $node, &$data, &$modified) {  argument
294         $this->validateVCard($data, $modified);
307      * @param bool $modified Should be set to true, if this event handler
311     function beforeCreateFile($path, &$data, DAV\ICollection $parentNode, &$modified) {  argument
316         $this->validateVCard($data, $modified);
326      * @param bool $modified Should be set to true, if this event handler
330     protected function validateVCard(&$data, &$modified) {  argument
349                 $modified = true;
390                     $modified = true;
410             if (!$modified && strcmp($data, $before) !== 0) {
412                 $modified = true;