public function beforePayeeBankgiro(Node $node): void
    {
        if (!$this->payeeBg) {
            $this->payeeBg = (string)$node->getValueFrom('Number');
        }

        if ($node->getValueFrom('Number') != $this->payeeBg) {
            $this->getErrorObject()->addError(
                "Non-matching payee bankgiro numbers (expecting: %s, found: %s) on line %s",
                $this->payeeBg,
                (string)$node->getValueFrom('Number'),
                (string)$node->getLineNr()
            );
        }
    }