Bug 320171 [Model] Use real Java-References in the Binding-Model-Elements
Currently they BindingTable is referencing a BindingContext using an ID. To me it looks like BindingTable is a child of BindingContext and then doesn't need the ID-Reference any more
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/impl/ApplicationImpl.java
* The cached value of the '{@link #getRootContext() <em>Root Context</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getRootContext()
	 * @generated
	 * @ordered
	 */
	protected EList<MBindingContext> rootContext;
	/**
	 * The cached value of the '{@link #getDescriptors() <em>Descriptors</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getDescriptors()
	 * @generated
	 * @ordered
	 */
	protected EList<MPartDescriptor> descriptors;
	/**
	 * The cached value of the '{@link #getBindingContexts() <em>Binding Contexts</em>}' attribute list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getBindingContexts()
	 * @generated
	 * @ordered
	 */
	protected EList<String> bindingContexts;
	/**
	 * The cached value of the '{@link #getMenuContributions() <em>Menu Contributions</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->