Bug 317423 [Model] Get rid of the AbstractContainers like PartDescriptorContainer, ...
Some of the containers we defined where solely used by Application and our old Model-Contribution story and hence are "useless" now: * PartDescriptorContainer * BindingTableContainer Stuff I'm unsure why we have containers are: * TrimContributions * MenuContributions * ToolBarContributions but to me it looks like they are only used by Application-class so beside that I guess they are abstract, right?
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/menu/impl/MenuFactoryImpl.java
*/
	@Override
	public String convertToString(EDataType eDataType, Object instanceValue) {
		switch (eDataType.getClassifierID()) {
			case MenuPackageImpl.ITEM_TYPE:
				return convertItemTypeToString(eDataType, instanceValue);
			default:
				throw new IllegalArgumentException("The datatype '" + eDataType.getName() + "' is not a valid classifier"); 
		}
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public MMenuSeparator createMenuSeparator() {
		MenuSeparatorImpl menuSeparator = new MenuSeparatorImpl();
		return menuSeparator;
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public MMenu createMenu() {
		MenuImpl menu = new MenuImpl();
		return menu;
	}
	/**
	 * <!-- begin-user-doc -->