metarepresenation.setAmModel(architectsModel);
metarepresenation.setDmModel(developersModel);
// precondition for membersRemoved
interfacesModified = new ModelItemsModified();
membersRemoved = new MembersRemoved();
comparator = new Comparator();
comparator.add(interfacesModified);
comparator.add(membersRemoved);