Address firstAdr = anschriftenGUI.get(0);
firstAdr.setStreet("Street new");
// merge
ManufacturingFacilityDTS prototype = manufacturingFacilityToEdit.returnPrototype();
mapper.map(manufacturingFacilityToEdit, prototype);
// Do some checks.
assertTrue("IdNumber was not kept after merge.",
4L == prototype.getIdNumber());