code: private boolean isSystemDescendant(QPath path)
     {
        return path.isDescendantOf(Constants.JCR_SYSTEM_PATH) || path.equals(Constants.JCR_SYSTEM_PATH);
     }
docs: Tell if the path is jcr:system descendant.
  
  @param path
  path to check
  @return boolean result, true if yes - it's jcr:system tree path