else if (sortOrder.equals(BY_PACKAGE))
else if (sortOrder.equals(GROUP_BY_PACKAGE))
    private Comparator getBugInstanceComparator(String sortOrder) {	if (sortOrder.equals(BY_CLASS))	    return bugInstanceByClassComparator;	else if (sortOrder.equals(BY_PACKAGE))	    return bugInstanceByPackageComparator;	else if (sortOrder.equals(BY_CATEGORY))	    return bugInstanceByCategoryComparator;	else	    throw new IllegalArgumentException("Bad sort order: " + sortOrder);    }