newCollection.writeXML(System.out, classToSourceFileMap);
	public static void main(String[] argv) throws Exception {		if (argv.length != 2) {			System.err.println("Usage: " + MergeResults.class.getName() + " <orig results> <new results>");			System.exit(1);		}		String origResultsFile = argv[0];		String newResultsFile = argv[1];		HashMap<String, String> classToSourceFileMap = new HashMap<String, String>();		SortedBugCollection origCollection = new SortedBugCollection();		SortedBugCollection newCollection = new SortedBugCollection();		origCollection.readXML(origResultsFile, classToSourceFileMap);		newCollection.readXML(newResultsFile, classToSourceFileMap);		Iterator<BugInstance> i = origCollection.iterator();		while (i.hasNext()) {			BugInstance orig = i.next();			if (newCollection.contains(orig)) {				newCollection.getMatching(orig);			}		}	}