Bug 303831 Warnings logged when trying to merge changes to an MPart's 'closeable' attribute
Warnings are printed out to syserr. --- WARNING: Unknown feature found, reconciliation may fail: Part#closeable
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/reconciler/ModelReconcilerPartTest.java
reconciler.recordChanges(application);
		menu.setToBeRendered(after);
		Object state = reconciler.serialize();
		application = createApplication();
		window = application.getChildren().get(0);
		part = (MPart) window.getChildren().get(0);
		menu = part.getMenus().get(0);
		Collection<ModelDelta> deltas = constructDeltas(application, state);
		assertEquals(before, menu.isToBeRendered());
		applyAll(deltas);
		assertEquals(after, menu.isToBeRendered());
	}
	public void testPart_Menu_ToBeRendered_TrueTrue() {
		testPart_Menu_ToBeRendered(true, true);
	}
	public void testPart_Menu_ToBeRendered_TrueFalse() {
		testPart_Menu_ToBeRendered(true, false);
	}
	public void testPart_Menu_ToBeRendered_FalseTrue() {
		testPart_Menu_ToBeRendered(false, true);
	}
	public void testPart_Menu_ToBeRendered_FalseFalse() {
		testPart_Menu_ToBeRendered(false, false);
	}
	public void testPart_ToolBar_Set() {
		MApplication application = createApplication();
		MWindow window = createWindow(application);
		MPart part = MApplicationFactory.eINSTANCE.createPart();
		window.getChildren().add(part);
		saveModel();