layout.setBorderWidth(1);
layout.getElement().getStyle().setProperty("margin", "1em");
gmp = new GlobalMsgPanel();
mv = new ModelViewer();
mvchanged = new ModelViewer();
fp = new TestFieldPanel();
eh = ErrorHandlerBuilder.build(true, true, new GlobalMsgPanel());
ep = new EditPanel(fp, false, false);
ep.setErrorHandler(eh, true);