public function own($path = "")
  {
    if ($path) {
      $parts = $this->split($path);
      $name = array_shift($parts);

      $own = array();
      if (isset($this->_subTrees[$name])) {
        $subtree = $this->_subTrees[$name];
        /* @var $subtree Wrapper_FS_Changes */
        $this->_appendChildren(
          $own, $name, $subtree->own($parts)
        );
      }
    } else {
      $own = $this->_ownData;
    }
    return $own;
  }