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/ui/basic/impl/PartImpl.java
setIconURI(ICON_URI_EDEFAULT);
				return;
			case BasicPackageImpl.PART__TOOLTIP:
				setTooltip(TOOLTIP_EDEFAULT);
				return;
			case BasicPackageImpl.PART__HANDLERS:
				getHandlers().clear();
				return;
			case BasicPackageImpl.PART__DIRTY:
				setDirty(DIRTY_EDEFAULT);
				return;
			case BasicPackageImpl.PART__BINDING_CONTEXTS:
				getBindingContexts().clear();
				return;
			case BasicPackageImpl.PART__MENUS:
				getMenus().clear();
				return;
			case BasicPackageImpl.PART__TOOLBAR:
				setToolbar((MToolBar)null);
				return;
			case BasicPackageImpl.PART__CLOSEABLE:
				setCloseable(CLOSEABLE_EDEFAULT);
				return;
			case BasicPackageImpl.PART__DESCRIPTION:
				setDescription(DESCRIPTION_EDEFAULT);
				return;
		}
		super.eUnset(featureID);
	}
	/**