Bug 138824 [CommonNavigator] Remove obsolete API
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/NavigatorSaveablesService.java
viewer = null;
				saveablesProviders = null;
				disposeListener = null;
			}
		}
	};
	private Map inactivePluginsWithSaveablesProviders;
    /**
	 * a TreeMap (NavigatorContentDescriptor->SaveablesProvider) which uses
	 * ExtensionPriorityComparator.INSTANCE as its Comparator
	 */
	private Map saveablesProviderMap;
	/**
	 * Implementation note: This is not synchronized at the method level because it needs to
	 * synchronize on "instances" first, then on "this", to avoid potential deadlock.
	 * 
	 * @param saveablesSource
	 * @param viewer
	 * @param outsideListener
	 * 
	 */
	public void init(final ISaveablesSource saveablesSource,
			final StructuredViewer viewer,
			ISaveablesLifecycleListener outsideListener) {
		 
		synchronized (instances) {