GroupStepper::setQueue

protected function setQueue(array $queue): void
{
	$queueId = (string) current($queue);
	$this->checkerName = (mb_strpos($this->checkerName, $queueId) === false ?
		$this->checkerName.$queueId : $this->checkerName);
	$this->baseName = (mb_strpos($this->baseName, $queueId) === false ?
		$this->baseName.$queueId : $this->baseName);
	$this->errorName = (mb_strpos($this->errorName, $queueId) === false ?
		$this->errorName.$queueId : $this->errorName);
}