Bug 264796 [TabbedProperties] HockeyLeagueExample needs EMF source code regenerated
I discovered when looking into another problem that the EMF source code for the Hockey League Example has not been regenerated for a while.
examples/org.eclipse.ui.examples.views.properties.tabbed.hockeyleague/src/org/eclipse/ui/examples/views/properties/tabbed/hockeyleague/provider/HockeyleagueItemProviderAdapterFactory.java
* <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Adapter createArenaAdapter() {
		if (arenaItemProvider == null) {
			arenaItemProvider = new ArenaItemProvider(this);
		}
		return arenaItemProvider;
	}
	/**
	 * This keeps track of the one adapter used for all {@link org.eclipse.ui.examples.views.properties.tabbed.hockeyleague.Defence} instances.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected DefenceItemProvider defenceItemProvider;
	/**
	 * This creates an adapter for a {@link org.eclipse.ui.examples.views.properties.tabbed.hockeyleague.Defence}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Adapter createDefenceAdapter() {
		if (defenceItemProvider == null) {
			defenceItemProvider = new DefenceItemProvider(this);
		}
		return defenceItemProvider;
	}
	/**