public void processPage(WikiPage page) throws Exception {
    FileSystemPage fsPage = (FileSystemPage) page;
    String path = fsPage.getFileSystemPath();

    File oldPropsFile = new File(path + old_propertiesFilename);
    Properties oldProps = loadOldProperties(oldPropsFile);
    saveNewProperties(path, oldProps);
    oldPropsFile.delete();
  }
 public FileSystemPage(final String name, final FileSystemPage parent, final FileSystem fileSystem)
     throws Exception {
   super(name, parent);
   path = parent.getFileSystemPath();
   versionsController = parent.versionsController;
   createDirectoryIfNewPage(fileSystem);
 }