/**
* Trace the change set under the core.
*/
function trace()
{
$rv = parent::trace();
$rv .= 'Chunsu(' . get_class($this) . ") {";
if (!is_null($this->changeset)) {
foreach (array_keys($this->changeset) as $index) {
$rv .= "\n {$index} -> " . print_r($this->changeset[$index], true);
}
}
$rv .= "\n}\n";
return $rv;
}
