Session::isFixedDocument

public function isFixedDocument(array $parameterDocumentId): bool
{
	$documents = $this->getDocuments();
	if (!$documents)
	{
		return false;
	}

	foreach ($documents as $document)
	{
		$document->setSession($this);
		if ($parameterDocumentId === $document->getParameterDocumentId())
		{
			return true;
		}
	}

	return false;
}