Bug 279452 [Compatibility] Parameterized command mechanism support
Parameterized commands like showView need to be able to access their parameters (like the view ID) PW
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/util/ApplicationSwitch.java
MItemPart<?> mItemPart = (MItemPart<?>)theEObject;
				T result = caseMItemPart(mItemPart);
				if (result == null) result = caseMPart(mItemPart);
				if (result == null) result = caseMItem(mItemPart);
				if (result == null) result = caseMApplicationElement(mItemPart);
				if (result == null) result = defaultCase(theEObject);
				return result;
			}
			case ApplicationPackage.MWINDOW: {
				MWindow<?> mWindow = (MWindow<?>)theEObject;
				T result = caseMWindow(mWindow);
				if (result == null) result = caseMItemPart(mWindow);
				if (result == null) result = caseMPart(mWindow);
				if (result == null) result = caseMItem(mWindow);
				if (result == null) result = caseMApplicationElement(mWindow);
				if (result == null) result = defaultCase(theEObject);
				return result;
			}
			case ApplicationPackage.MCOMMAND: {
				MCommand mCommand = (MCommand)theEObject;
				T result = caseMCommand(mCommand);
				if (result == null) result = caseMApplicationElement(mCommand);
				if (result == null) result = defaultCase(theEObject);
				return result;
			}
			case ApplicationPackage.MTOOL_BAR_CONTAINER: {
				MToolBarContainer mToolBarContainer = (MToolBarContainer)theEObject;
				T result = caseMToolBarContainer(mToolBarContainer);
				if (result == null) result = defaultCase(theEObject);
				return result;