private function isShipmentAmountInvoiced(Invoice\InvoiceInterface $invoice)
    {
        /** @var Invoice\InvoiceSubjectInterface $sale */
        $sale = $invoice->getSale();

        // Abort if another invoice has a shipment line
        foreach ($sale->getInvoices() as $i) {
            if ($i === $invoice) {
                continue;
            }
            if ($i->hasLineByType(Document\DocumentLineTypes::TYPE_SHIPMENT)) {
                return true;
            }
        }

        return false;
    }
private function isShipmentAmountInvoiced(Invoice\InvoiceInterface $invoice)
    {
        /** @var Invoice\InvoiceSubjectInterface $sale */
        $sale = $invoice->getSale();

        // Abort if another invoice has a shipment line
        foreach ($sale->getInvoices() as $i) {
            if ($i === $invoice) {
                continue;
            }
            if ($i->hasLineByType(Document\DocumentLineTypes::TYPE_SHIPMENT)) {
                return true;
            }
        }

        return false;
    }
private function isShipmentAmountInvoiced ( Invoice \ InvoiceInterface $ invoice ) { /** @var Invoice\InvoiceSubjectInterface $sale */ $ sale = $ invoice -> getSale ( ) ; // Abort if another invoice has a shipment line foreach ( $ sale -> getInvoices ( ) as $ i ) { if ( $ i === $ invoice ) { continue ; } if ( $ i -> hasLineByType ( Document \ DocumentLineTypes :: TYPE_SHIPMENT ) ) { return true ; } } return false ; }
Returns whether the shipment amount is already invoiced.

@param Invoice\InvoiceInterface $invoice

@return bool
Returns whether the shipment amount is already invoiced .