Error::addFromResult

public function addFromResult($result)
{
	if (
		(
		$result instanceof BitrixMainResult ||
		$result instanceof BitrixMainEntityAddResult ||
		$result instanceof BitrixMainEntityUpdateResult ||
		$result instanceof BitrixMainEntityDeleteResult
		) && !$result->isSuccess()
	)
	{
		foreach ($result->getErrors() as $error)
		{
			$this->addError(
				$error->getCode(),
				$error->getMessage()
			);
		}
	}
}