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/MenuPackageImpl.java
* @see org.eclipse.e4.ui.model.application.ui.menu.impl.MenuImpl
		 * @see org.eclipse.e4.ui.model.application.ui.menu.impl.MenuPackageImpl#getMenu()
		 * @generated
		 */
		public static final EClass MENU = eINSTANCE.getMenu();
		/**
		 * The meta object literal for the '<em><b>Enabled</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		public static final EAttribute MENU__ENABLED = eINSTANCE.getMenu_Enabled();
		/**
		 * The meta object literal for the '{@link org.eclipse.e4.ui.model.application.ui.menu.impl.MenuContributionImpl <em>Contribution</em>}' class.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @see org.eclipse.e4.ui.model.application.ui.menu.impl.MenuContributionImpl
		 * @see org.eclipse.e4.ui.model.application.ui.menu.impl.MenuPackageImpl#getMenuContribution()
		 * @generated
		 */
		public static final EClass MENU_CONTRIBUTION = eINSTANCE.getMenuContribution();
		/**
		 * The meta object literal for the '<em><b>Position In Parent</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		public static final EAttribute MENU_CONTRIBUTION__POSITION_IN_PARENT = eINSTANCE.getMenuContribution_PositionInParent();
		/**
		 * The meta object literal for the '<em><b>Parent ID</b></em>' attribute feature.