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/internal/application/MApplicationImpl.java
public EList<MCommand> getCommand() {
		if (command == null) {
			command = new EObjectContainmentEList<MCommand>(MCommand.class, this, ApplicationPackage.MAPPLICATION__COMMAND);
		}
		return command;
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case ApplicationPackage.MAPPLICATION__WINDOWS:
				return ((InternalEList<?>)getWindows()).basicRemove(otherEnd, msgs);
			case ApplicationPackage.MAPPLICATION__COMMAND:
				return ((InternalEList<?>)getCommand()).basicRemove(otherEnd, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case ApplicationPackage.MAPPLICATION__WINDOWS: