public List<RuleSet> findRuleSets() {
   RuleSetQuery ruleSetQuery = new RuleSetQuery();
   ruleSetQuery.filterByRuleType(RuleType.SAFETY_SIGNALLING_RULES);
   ruleSetQuery.filterByStatus(RuleSet.STATUS_ENABLED);
   ruleSetQuery.filterByStudyId(1);
   return (List<RuleSet>) caaersRulesEngineService.getRuleSetDao().search(ruleSetQuery);
 }