first implementation of header allowances

mustang/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterEdgeTest.java

@@ -149,6 +149,21 @@ public class MustangReaderWriterEdgeTest extends TestCase implements IZUGFeRDExp
         return "Zahlbar ohne Abzug bis zum " + germanDateFormat.format(getDueDate());
     }
 
+    @Override
+    public IZUGFeRDAllowanceCharge[] getZFAllowances() {
+        return null;
+    }
+
+    @Override
+    public IZUGFeRDAllowanceCharge[] getZFCharges() {
+        return null;
+    }
+
+    @Override
+    public IZUGFeRDAllowanceCharge[] getZFLogisticsServiceCharges() {
+        return null;
+    }
+
   class Contact implements IZUGFeRDExportableContact
   {
 

mustang/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java

@@ -148,6 +148,24 @@ public class MustangReaderWriterTest extends TestCase implements IZUGFeRDExporta
         return "Zahlbar ohne Abzug bis zum " + germanDateFormat.format(getDueDate());
     }
 
+    @Override
+    public IZUGFeRDAllowanceCharge[] getZFAllowances() {
+        return null;
+        //throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public IZUGFeRDAllowanceCharge[] getZFCharges() {
+        return null;
+        //throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public IZUGFeRDAllowanceCharge[] getZFLogisticsServiceCharges() {
+        return null;
+        //throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
   class Contact implements IZUGFeRDExportableContact
   {