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.edit/src/org/eclipse/e4/ui/model/application/ui/basic/provider/PartItemProvider.java
ApplicationPackageImpl.Literals.CONTRIBUTION__OBJECT,
				 true,
				 false,
				 false,
				 ItemPropertyDescriptor.GENERIC_VALUE_IMAGE,
				 null,
				 null));
	}
	/**
	 * This adds a property descriptor for the Persisted State feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addPersistedStatePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add
			(createItemPropertyDescriptor
				(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(),
				 getResourceLocator(),
				 getString("_UI_Contribution_persistedState_feature"), 
				 getString("_UI_PropertyDescriptor_description", "_UI_Contribution_persistedState_feature", "_UI_Contribution_type"), 
				 ApplicationPackageImpl.Literals.CONTRIBUTION__PERSISTED_STATE,
				 true,
				 false,
				 false,
				 null,
				 null,
				 null));
	}
	/**