Bug 315698 'persistedState' feature not reconciled for existing contributions
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/XMLModelReconciler.java
if (constructDeltas(deltas, references, (EObject) command, element, id)) {
					return true;
				}
			}
		}
		if (object instanceof MPartDescriptorContainer) {
			for (MPartDescriptor descriptor : ((MPartDescriptorContainer) object).getDescriptors()) {
				if (constructDeltas(deltas, references, (EObject) descriptor, element, id)) {
					return true;
				}
			}
		}
		if (object instanceof MPart) {
			MPart part = (MPart) object;
			for (MMenu menu : part.getMenus()) {
				if (constructDeltas(deltas, references, (EObject) menu, element, id)) {
					return true;
				}
			}
			MToolBar toolBar = part.getToolbar();
			if (toolBar != null) {
				if (constructDeltas(deltas, references, (EObject) toolBar, element, id)) {
					return true;
				}
			}
		}
		if (object instanceof MWindow) {
			MWindow window = (MWindow) object;
			if (constructDeltas(deltas, references, (EObject) window.getMainMenu(), element, id)) {
				return true;