workspaceExists() protected méthode

protected workspaceExists ( $workspaceName )
 /**
  * {@inheritDoc}
  */
 protected function workspaceExists($workspaceName)
 {
     $cacheKey = "workspace: {$workspaceName}";
     $result = $this->caches['meta']->fetch($cacheKey);
     if (!$result && parent::workspaceExists($workspaceName)) {
         $result = 1;
         $this->caches['meta']->save($cacheKey, $result);
     }
     return $result;
 }