Bug 315281 update copyrights for 3.6
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/navigator/resources/ProjectExplorer.java
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.navigator.framelist.Frame;
import org.eclipse.ui.internal.navigator.framelist.FrameList;
import org.eclipse.ui.internal.navigator.framelist.TreeFrame;
import org.eclipse.ui.internal.navigator.resources.ResourceToItemsMapper;
import org.eclipse.ui.internal.navigator.resources.plugin.WorkbenchNavigatorMessages;
import org.eclipse.ui.model.IWorkbenchAdapter;
import org.eclipse.ui.navigator.CommonNavigator;
import org.eclipse.ui.navigator.INavigatorContentService;
/**
 * 
 * @see CommonNavigator
 * @see INavigatorContentService
 * @since 3.2
 * 
 */
public final class ProjectExplorer extends CommonNavigator {
	/**
	 * Provides a constant for the standard instance of the Common Navigator.
	 * 
	 * @see PlatformUI#getWorkbench()
	 * @see IWorkbench#getActiveWorkbenchWindow()
	 * @see IWorkbenchWindow#getActivePage()
	 * 
	 * @see IWorkbenchPage#findView(String)
	 * @see IWorkbenchPage#findViewReference(String)