Bug 315281 update copyrights for 3.6
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonViewer.java
* Initializes the content provider, label provider, and drag and drop
	 * support. Should not be called by clients -- this method is invoked when
	 * the constructor is invoked.
	 * </p>
	 */
	protected void init() {
		setUseHashlookup(true);
		setContentProvider(contentService.createCommonContentProvider());
		setLabelProvider(new NavigatorDecoratingLabelProvider(contentService.createCommonLabelProvider()));
		initDragAndDrop();
	}
	void setCommonNavigator(CommonNavigator navigator) {
		commonNavigator = navigator;
	}
	/**
	 * Sets the {@link ICommonViewerMapper} to work with this viewer.
	 * 
	 * @param mapper
	 * @since 3.4
	 */
	public void setMapper(ICommonViewerMapper mapper) {
		_mapper = mapper;
	}
	
	/**
	 * Gets the {@link ICommonViewerMapper} assigned to this viewer.
	 * 
	 * @return the mapper
	 * @since 3.4
	 */