code: private void updateParentPath(String newParentPath, String oldParentPath) {
  
          String oldPath = getSitePath();
          String newPath = oldPath.replaceFirst(oldParentPath, newParentPath);
          getListItemWidget().setSubtitleLabel(newPath);
          for (Widget child : getChildren()) {
              ((CmsGalleryTreeItem)child).updateParentPath(newPath, oldPath);
          }
      }
docs: Updates the site path info.<p>
  
  @param newParentPath the new parent path
  @param oldParentPath the previous parent path