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
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/XMLModelReconciler.java
Object match = findReference(references, referenceId);
					if (match != null) {
						
						
						if (reference.getNodeName().equals(REFERENCE_ELEMENT_NAME)) {
							userReferences.add(match);
						} else {
							originalReferences.add(match);
						}
					}
				}
			}
		}
		return new EMFModelDeltaThreeWayDelayedSet(eObject, feature, originalReferences,
				userReferences, currentReferences);
	}
	private static EObject createObject(String type) {
		if (type.equals(MPart.class.getSimpleName())) {
			return (EObject) MApplicationFactory.eINSTANCE.createPart();
		} else if (type.equals(MCommand.class.getSimpleName())) {
			return (EObject) MApplicationFactory.eINSTANCE.createCommand();
		} else if (type.equals(MHandler.class.getSimpleName())) {
			return (EObject) MApplicationFactory.eINSTANCE.createHandler();
		} else if (type.equals(MKeyBinding.class.getSimpleName())) {
			return (EObject) MApplicationFactory.eINSTANCE.createKeyBinding();
		} else if (type.equals(MMenu.class.getSimpleName())) {
			return (EObject) MApplicationFactory.eINSTANCE.createMenu();
		} else if (type.equals(MWindow.class.getSimpleName())) {
			return (EObject) MApplicationFactory.eINSTANCE.createWindow();
		} else if (type.equals(MToolBar.class.getSimpleName())) {