/**
* {@inheritdoc}
*/
public function convertToJson(array $keys = array())
{
$pluginInfo = $this->pluginList->getNext($this->subjectType, 'convertToJson');
if (!$pluginInfo) {
return parent::convertToJson($keys);
} else {
return $this->___callPlugins('convertToJson', func_get_args(), $pluginInfo);
}
}