Bug 316298 [Compatibility] Support o.e.ui.menus visibleWhen
We need support in MCoreExpression for entire expressions created by the WorkbenchMenuService. They don't often use ReferenceExpressions to core expression definitions. PW
bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/workbench/swt/modeling/MenuServiceFilter.java
if (DEBUG) {
				trace("handlerRenderedMenu.Show", menu, menuModel);
			}
			cleanUp(menu);
			showRenderedMenu(event, menu, menuModel);
			break;
		case SWT.Hide:
			if (DEBUG) {
				trace("handlerRenderedMenu.Hide", menu, menuModel);
			}
			
			break;
		case SWT.Dispose:
			if (DEBUG) {
				trace("handlerRenderedMenu.Dispose", menu, menuModel);
			}
			cleanUp(menu);
			break;
		}
	}
	private void showRenderedMenu(final Event event, final Menu menu,
			final MRenderedMenu menuModel) {
		if (!(menuModel.getContributionManager() instanceof MenuManager)) {
			return;
		}
		MenuManager manager = (MenuManager) menuModel.getContributionManager();
		if (DEBUG) {
			trace("showRenderedMenu: " + manager, menu, menuModel);
		}
		Method handleAboutToShow = getAboutToShow();