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/descriptor/basic/impl/BasicPackageImpl.java
* <!-- end-user-doc -->
	 * @return the meta object for class '<em>Part Descriptor</em>'.
	 * @see org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor
	 * @generated
	 */
	public EClass getPartDescriptor() {
		return partDescriptorEClass;
	}
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor#isAllowMultiple <em>Allow Multiple</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Allow Multiple</em>'.
	 * @see org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor#isAllowMultiple()
	 * @see #getPartDescriptor()
	 * @generated
	 */
	public EAttribute getPartDescriptor_AllowMultiple() {
		return (EAttribute)partDescriptorEClass.getEStructuralFeatures().get(0);
	}
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor#getCategory <em>Category</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Category</em>'.
	 * @see org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor#getCategory()
	 * @see #getPartDescriptor()
	 * @generated
	 */
	public EAttribute getPartDescriptor_Category() {