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
if (element == null)
				id = USER + String.valueOf(System.currentTimeMillis());
			else
				id = element
						.getAttribute(MarkerSupportInternalUtilities.ATTRIBUTE_NAME);
		}
		return id;
	}
	/**
	 * Return the name of the receiver.
	 * 
	 * @return String
	 */
	public String getName() {
		if (name == null) {
			if (element == null)
				name = MarkerSupportInternalUtilities.EMPTY_STRING;
			else
				name = element
						.getAttribute(MarkerSupportInternalUtilities.ATTRIBUTE_NAME);
		}
		return name;
	}
	/**
	 * Return the resources in the working set. If it is empty then return the
	 * workspace root.
	 * 
	 * @return IResource[]
	 */
	IResource[] getResourcesInWorkingSet() {