Bug 258810 [Markers] Markers for the entire workspace show up when working set empty
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerFieldFilterGroup.java
return projects;
	}
	protected CachedMarkerBuilder builder;
	private IConfigurationElement element;
	private Map EMPTY_MAP = new HashMap();
	private boolean enabled = true;
	protected MarkerFieldFilter[] fieldFilters;
	private int scope;
	private String name;
	private String id;
	/**
	 * The entry for testing filters. Cached to prevent garbage.
	 */
	private MarkerEntry testEntry = new MarkerEntry(null);
	private IWorkingSet workingSet;
	private Collection workingSetPaths;
	private IResource[] wSetResources;
	/**
	 * Create a new instance of the receiver.
	 * 
	 * @param configurationElement
	 * @param markerBuilder
	 */
	public MarkerFieldFilterGroup(IConfigurationElement configurationElement,
			CachedMarkerBuilder markerBuilder) {
		element = configurationElement;
		builder = markerBuilder;
		initializeWorkingSet();
		scope = processScope();
		if (configurationElement == null)