protected function process_data(&$signal)
{
$result = parent::process_data($signal);
if ($this->feed_on_signal == FEED_ON_SIGNAL_DATA) {
return $this->send_feed_on_signal($signal);
}
$this->set_jobdata($result);
return $result;
}
protected function process_data(&$signal)
{
$this->changes = array();
return parent::process_data($signal);
}