Bug 317405 [Model] HandledItem should be abstract
Looks like an oversight the only real types are HandledMenuItem and HandledToolItem.
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/menu/impl/ToolItemImpl.java
return msgs;
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setMenu(MMenu newMenu) {
		if (newMenu != menu) {
			NotificationChain msgs = null;
			if (menu != null)
				msgs = ((InternalEObject)menu).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - MenuPackageImpl.TOOL_ITEM__MENU, null, msgs);
			if (newMenu != null)
				msgs = ((InternalEObject)newMenu).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - MenuPackageImpl.TOOL_ITEM__MENU, null, msgs);
			msgs = basicSetMenu(newMenu, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, MenuPackageImpl.TOOL_ITEM__MENU, newMenu, newMenu));
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case MenuPackageImpl.TOOL_ITEM__MENU:
				return basicSetMenu(null, msgs);