Bug 277676 [UI] The workbench should create the contexts
The workbench should create contexts for the model elements, MApplication and MParts (windows, sashes, contributed parts, etc). This is not really the responsibility of the renderers. PW
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ApplicationPackage.java
* The meta object literal for the '<em><b>Widget</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EAttribute MPART__WIDGET = eINSTANCE.getMPart_Widget();
		/**
		 * The meta object literal for the '<em><b>Parent</b></em>' container reference feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EReference MPART__PARENT = eINSTANCE.getMPart_Parent();
		/**
		 * The meta object literal for the '<em><b>Visible</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EAttribute MPART__VISIBLE = eINSTANCE.getMPart_Visible();
		/**
		 * The meta object literal for the '<em><b>Context</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EAttribute MPART__CONTEXT = eINSTANCE.getMPart_Context();
		/**
		 * The meta object literal for the '{@link org.eclipse.e4.ui.model.internal.application.MStackImpl <em>MStack</em>}' class.
		 * <!-- begin-user-doc -->