DocumentInfo::isAbandoned

public function isAbandoned(): bool
{
	if ($this->isFinished())
	{
		return false;
	}

	if ($this->isSaving())
	{
		$now = new DateTime();
		if ($now->getTimestamp() - $this->getUpdateTime()->getTimestamp() > self::SECONDS_TO_MARK_AS_STILL_WORKING * 2)
		{
			return true;
		}
	}

	return false;
}