protected function loadMissing($name, $params)
{
if ($this->value == Horde_Kolab_Format_Xml::VALUE_NOT_EMPTY && !$this->isRelaxed($params)) {
throw new Horde_Kolab_Format_Exception_MissingValue($name);
}
if ($this->value == Horde_Kolab_Format_Xml::VALUE_DEFAULT) {
return $this->default;
}
}