Bug 306576 Externalization/translation of strings in xmi files
Currently our e4xmi files have various hard-coded English strings that are presented to the user (in particular the "label" attributes). Is there some mechanism already defined for externalization/translation of NLS strings from these xmi files? If not, we need to define one. Creating a new xmi file from scratch for each language won't scale, and won't allow switching languages after the product is installed.
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/menu/impl/MenuPackageImpl.java
createEAttribute(renderedMenuItemEClass, RENDERED_MENU_ITEM__CONTRIBUTION_ITEM);
		
		itemTypeEEnum = createEEnum(ITEM_TYPE);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	private boolean isInitialized = false;
	/**
	 * Complete the initialization of the package and its meta-model.  This
	 * method is guarded to have no affect on any invocation but its first.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void initializePackageContents() {
		if (isInitialized) return;
		isInitialized = true;
		
		setName(eNAME);
		setNsPrefix(eNS_PREFIX);
		setNsURI(eNS_URI);
		
		UiPackageImpl theUiPackage = (UiPackageImpl)EPackage.Registry.INSTANCE.getEPackage(UiPackageImpl.eNS_URI);
		CommandsPackageImpl theCommandsPackage = (CommandsPackageImpl)EPackage.Registry.INSTANCE.getEPackage(CommandsPackageImpl.eNS_URI);
		ApplicationPackageImpl theApplicationPackage = (ApplicationPackageImpl)EPackage.Registry.INSTANCE.getEPackage(ApplicationPackageImpl.eNS_URI);
		BasicPackageImpl theBasicPackage = (BasicPackageImpl)EPackage.Registry.INSTANCE.getEPackage(BasicPackageImpl.eNS_URI);