/** * Prune this directory if it is empty. * * @return NULL */ private function _prune() { if (empty($this->_files) && empty($this->_subdirectories)) { $this->_element->delete(); if ($this->_parent instanceof Horde_Pear_Package_Xml_Directory) { $this->_parent->_deleteSubdirectory($this->_element->getName()); } } }