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/basic/impl/PartImpl.java
return;
			case BasicPackageImpl.PART__TO_BE_RENDERED:
				setToBeRendered(TO_BE_RENDERED_EDEFAULT);
				return;
			case BasicPackageImpl.PART__ON_TOP:
				setOnTop(ON_TOP_EDEFAULT);
				return;
			case BasicPackageImpl.PART__VISIBLE:
				setVisible(VISIBLE_EDEFAULT);
				return;
			case BasicPackageImpl.PART__PARENT:
				setParent((MElementContainer<MUIElement>)null);
				return;
			case BasicPackageImpl.PART__CONTAINER_DATA:
				setContainerData(CONTAINER_DATA_EDEFAULT);
				return;
			case BasicPackageImpl.PART__CUR_SHARED_REF:
				setCurSharedRef((MPlaceholder)null);
				return;
			case BasicPackageImpl.PART__VISIBLE_WHEN:
				setVisibleWhen((MExpression)null);
				return;
			case BasicPackageImpl.PART__ACCESSIBILITY_PHRASE:
				setAccessibilityPhrase(ACCESSIBILITY_PHRASE_EDEFAULT);
				return;
			case BasicPackageImpl.PART__LABEL:
				setLabel(LABEL_EDEFAULT);
				return;
			case BasicPackageImpl.PART__ICON_URI:
				setIconURI(ICON_URI_EDEFAULT);