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
* @generated
	 * @ordered
	 */
	int MSTACK__VISIBLE = MPART__VISIBLE;
	/**
	 * The feature id for the '<em><b>Context</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int MSTACK__CONTEXT = MPART__CONTEXT;
	/**
	 * The number of structural features of the '<em>MStack</em>' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int MSTACK_FEATURE_COUNT = MPART_FEATURE_COUNT + 0;
	/**
	 * The meta object id for the '{@link org.eclipse.e4.ui.model.internal.application.MSashFormImpl <em>MSash Form</em>}' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see org.eclipse.e4.ui.model.internal.application.MSashFormImpl
	 * @see org.eclipse.e4.ui.model.internal.application.ApplicationPackageImpl#getMSashForm()
	 * @generated
	 */
	int MSASH_FORM = 4;
	/**