/**
*
* @return \Gems_Tracker_Source_SourceInterface
*/
public function getSource()
{
if (!$this->_source && isset($this->_gemsSurvey['gsu_id_source']) && $this->_gemsSurvey['gsu_id_source']) {
$this->_source = $this->tracker->getSource($this->_gemsSurvey['gsu_id_source']);
if (!$this->_source) {
throw new \Gems_Exception('No source for exists for source ' . $this->_gemsSurvey['gsu_id_source'] . '.');
}
}
return $this->_source;
}
