Bug 294303 [Markers] 'Queuing Viewer Updates' in Problems view
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/UIUpdateJob.java
categories[0].getDescription());
			}
			if (monitor.isCanceled())
				return Status.CANCEL_STATUS;
			viewer.refresh(true);
			 
			
			view.reexpandCategories();
			
			if(view.getBuilder().readChangeFlags()[0]){
				
			}
			lastUpdateTime = System.currentTimeMillis();
		} finally {
			viewer.getTree().setRedraw(true);
			view.updateStatusLine((IStructuredSelection) viewer.getSelection());
			view.updateCategoryLabels();
			if (!monitor.isCanceled()) {
				view.updateTitle();
			}
			updating = false;
		}
		monitor.done();
		return Status.OK_STATUS;
	}
	/**
	 * @return Returns true if updating.
	 */
	boolean isUpdating() {
		return updating;