Bug 294303 [Markers] 'Queuing Viewer Updates' in Problems view
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
}
		});
	}
	/**
	 * 
	 */
	private void addHelpListener() {
		
		viewer.getControl().addHelpListener(new HelpListener() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see
			 * org.eclipse.swt.events.HelpListener#helpRequested(org.eclipse
			 * .swt.events.HelpEvent)
			 */
			public void helpRequested(HelpEvent e) {
				Object provider = getAdapter(IContextProvider.class);
				if (provider == null)
					return;
				IContext context = ((IContextProvider) provider)
						.getContext(viewer.getControl());
				PlatformUI.getWorkbench().getHelpSystem().displayHelp(context);
			}
		});
	}
	/**
	 * 
	 */
	private void addExpansionListener() {