FormResponse::fetch

public function fetch(): ?LeadAdsForm
{
	if ($this->currentResponse >= $this->responseCount || !$this->isSuccess())
	{
		return null;
	}

	/**@var array|null $form*/
	if (!$form = $this->data[$this->currentResponse]->fetch())
	{
		++$this->currentResponse;

		return $this->fetch();
	}

	return $this->formBuilder->buildForm($form);
}