code: public String getFullPath()
    {
      if (_root == this || _root == null)
        return getPath();
  
      String rootPath = _root.getFullPath();
      String path = getPath();
  
      if (rootPath.length() <= 1)
        return path;
      else if (path.length() <= 1)
        return rootPath;
      else
        return rootPath + path;
    }
docs: For chrooted filesystems return the real system path.