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 msgs;
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setVisibleWhen(MExpression newVisibleWhen) {
		if (newVisibleWhen != visibleWhen) {
			NotificationChain msgs = null;
			if (visibleWhen != null)
				msgs = ((InternalEObject)visibleWhen).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - BasicPackageImpl.PART__VISIBLE_WHEN, null, msgs);
			if (newVisibleWhen != null)
				msgs = ((InternalEObject)newVisibleWhen).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - BasicPackageImpl.PART__VISIBLE_WHEN, null, msgs);
			msgs = basicSetVisibleWhen(newVisibleWhen, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, BasicPackageImpl.PART__VISIBLE_WHEN, newVisibleWhen, newVisibleWhen));
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public String getAccessibilityPhrase() {
		return accessibilityPhrase;
	}
	/**
	 * <!-- begin-user-doc -->