MenuManager menuManager = new LibraryExplorerContextMenuProvider( treeViewer );
MenuManager menuManager = new LibraryExplorerContextMenuProvider( this );
	private void createContextMenus( )	{		MenuManager menuManager = new LibraryExplorerContextMenuProvider( treeViewer );		Menu menu = menuManager.createContextMenu( treeViewer.getControl( ) );		treeViewer.getControl( ).setMenu( menu );		getSite( ).registerContextMenu( "#Pop up", menuManager, //$NON-NLS-1$				getSite( ).getSelectionProvider( ) );	}