MappingSequenceNode seq3 = item.addSequenceNode(new MappingSequenceNode());
seq3.addChildElement(new MappingElement("Name", "xmltest.group.items.itemName")); //$NON-NLS-1$ //$NON-NLS-2$
seq3.addChildElement(new MappingElement("Quantity", "xmltest.group.items.itemQuantity")); //$NON-NLS-1$ //$NON-NLS-2$
//NESTED STUFF======================================================================
MappingElement suppliers = seq3.addChildElement(new MappingElement("Suppliers")); //$NON-NLS-1$
MappingSequenceNode seq4 = suppliers.addSequenceNode(new MappingSequenceNode());
MappingElement supplier = seq4.addChildElement(new MappingElement("Supplier")); //$NON-NLS-1$
supplier.setSource("xmltest.suppliers"); //$NON-NLS-1$
supplier.setMaxOccurrs(-1);