CCrmActivityDbResult::Fetch

public function Fetch()
{
	$additionalFields = [
		'LIGHT_COUNTER_AT',
		'IS_INCOMING_CHANNEL'
	];

	if (
		!empty(array_intersect($additionalFields, $this->selectFields))
		&& in_array('ID', $this->selectFields, true)
	)
	{
		return $this->getNextFetchedRecord();
	}

	return $this->fetchOneRecord();
}