function handleSave($populate = true)
 {
     $GLOBALS['log']->info(get_class($this) . "->handleSave()");
     if ($populate) {
         $this->_populateFromRequest($this->_fielddefs);
     }
     $viewdefs = $this->_viewdefs;
     $viewdefs['panels'] = $this->_convertToCanonicalForm($this->_viewdefs['panels'], $this->_fielddefs);
     $this->implementation->deploy(MetaDataFiles::mapPathToArray(MetaDataFiles::getViewDefVar($this->_view), $viewdefs));
     $this->_clearCaches();
 }