return categorySet;
	private static void handleBugCategories(String categories) {		// Parse list of bug categories		HashSet<String> categorySet = new HashSet<String>();		StringTokenizer tok = new StringTokenizer(categories, ",");		while (tok.hasMoreTokens()) {			categorySet.add(tok.nextToken());		}		// Enable only those detectors that can emit those categories		// (and the ones that produce unknown bug patterns, just to be safe).		// Skip disabled detectors, though.		for (Iterator<DetectorFactory> i = DetectorFactoryCollection.instance().factoryIterator(); i.hasNext();) {			DetectorFactory factory = i.next();			if (!factory.isEnabled())				continue;			Collection<BugPattern> reported = factory.getReportedBugPatterns();			boolean enable = false;			if (reported.isEmpty()) {				// Don't know what bug patterns are produced by this detector				if (DEBUG) System.out.println("Unknown bug patterns for " + factory.getShortName());				enable = true;			} else {				for (Iterator<BugPattern> j = reported.iterator(); j.hasNext();) {					BugPattern bugPattern = j.next();					if (categorySet.contains(bugPattern.getCategory())) {						if (DEBUG)							System.out.println("MATCH ==> " + categorySet +							        " -- " + bugPattern.getCategory());						enable = true;						break;					}				}			}			if (DEBUG && enable) {				System.out.println("Enabling " + factory.getShortName());			}			factory.setEnabled(enable);		}	}