Horde_Pear_Package_Xml_Element_Directory::getDirectoryNode PHP Method

    public function getDirectoryNode()
    {
        if ($this->_dir === null) {
            throw new Horde_Pear_Exception('The directory node has been left undefined!');
        }
        return $this->_dir;
    }

 /**
  * Remove the file entry from the XML.
  *
  * @return NULL
  */
 public function delete()
 {
     $file = $this->getFileNode();
     $dir = $this->_parent->getDirectoryNode();
     $this->_xml->removeWhitespace($file->previousSibling);
     $dir->removeChild($file);
 }