public Set<DependencyRule> getPublishedRules() {
        Set<DependencyRule> rules = new TreeSet<DependencyRule>();
        if (getProperties() == null) {
            return rules;
        }
        String mavenRules = getProperties().get("debian.mavenRules");
        if (mavenRules != null) {
            for(String ruleString : mavenRules.split(",")) {
                rules.add(new DependencyRule(ruleString.trim()));
            }
        }
        return rules;
    }