NullPointerException at deprecated getTradeSettlementPayment (1.7.7)

[smejkal]

@deprecated
default IZUGFeRDTradeSettlementPayment[] getTradeSettlementPayment() {
return null;
}

getPaymentData should check null before iterate the array

at org.mustangproject.ZUGFeRD.ZUGFeRDTransactionModelConverter.getPaymentData(ZUGFeRDTransactionModelConverter.java:454)
at org.mustangproject.ZUGFeRD.ZUGFeRDTransactionModelConverter.getTradeSettlement(ZUGFeRDTransactionModelConverter.java:429)
at org.mustangproject.ZUGFeRD.ZUGFeRDTransactionModelConverter.getTradeTransaction(ZUGFeRDTransactionModelConverter.java:187)
at org.mustangproject.ZUGFeRD.ZUGFeRDTransactionModelConverter.convertToModel(ZUGFeRDTransactionModelConverter.java:103)
at org.mustangproject.ZUGFeRD.ZUGFeRD1PullProvider.createZugferdXMLForTransaction(ZUGFeRD1PullProvider.java:77)
at org.mustangproject.ZUGFeRD.ZUGFeRD1PullProvider.generateXML(ZUGFeRD1PullProvider.java:104)
at org.mustangproject.ZUGFeRD.ZUGFeRDExporter.PDFattachZugferdFile(ZUGFeRDExporter.java:393)