/**
* Update the specified attribute.
*
* @param string $name The name of the the
* attribute to be updated.
* @param array $attributes The data array that holds
* all attribute values.
* @param DOMNode $parent_node The parent node of the
* node that should be
* updated.
* @param Horde_Kolab_Format_Xml_Helper $helper A XML helper instance.
* @param array $params Additional parameters
* for this write operation.
*
* @return DOMNode|boolean The new/updated child node or false if this
* failed.
*
* @throws Horde_Kolab_Format_Exception If converting the data to XML failed.
*/
public function save($name, $attributes, $parent_node, Horde_Kolab_Format_Xml_Helper $helper, $params = array())
{
$value = $this->generateWriteValue($name, $attributes, $params);
return empty($value) ? false : $helper->appendXml($parent_node, $value);
}