Bug 317037 [XMI] Reconciler does not consider MPerspective's 'windows' feature
SSIA
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
if (elementName.equals(CONTEXT_PROPERTIES_ATTNAME)) {
			constructEntryDelta(deltas, UiPackageImpl.eINSTANCE.getContext_Properties(), object,
					element);
		} else if (elementName.equals(CONTRIBUTION_PERSISTEDSTATE_ATTNAME)) {
			constructEntryDelta(deltas, ApplicationPackageImpl.eINSTANCE
					.getContribution_PersistedState(), object, element);
		} else {
			constructObjectDeltas(deltas, references, object, element);
		}
	}
	private void constructEntryDelta(Collection<ModelDelta> deltas, EStructuralFeature feature,
			EObject object, Element element) {
		if (element.getAttribute(UNSET_ATTNAME).equals(UNSET_ATTVALUE_TRUE)) {
			EMFDeltaEntrySet delta = new EMFDeltaEntrySet(object, feature, element
					.getAttribute(ENTRY_ATTVALUE_KEY), null);
			deltas.add(delta);
		} else {
			EMFDeltaEntrySet delta = new EMFDeltaEntrySet(object, feature, element
					.getAttribute(ENTRY_ATTVALUE_KEY), element.getAttribute(ENTRY_ATTVALUE_VALUE));
			deltas.add(delta);
		}
	}
	private void constructObjectDeltas(Collection<ModelDelta> deltas, List<Object> references,
			EObject object, Element element) {
		NodeList nodeList = (NodeList) element;
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i);
			if (!(node instanceof Element)) {
				continue;
			}