public virtual IList <GroupDto> queryGroups(GroupQueryDto queryDto, int?firstResult, int?maxResults) { queryDto.ObjectMapper = ObjectMapper; GroupQuery query = queryDto.toQuery(ProcessEngine); IList <Group> resultList; if (firstResult != null || maxResults != null) { resultList = executePaginatedQuery(query, firstResult, maxResults); } else { resultList = query.list(); } return(GroupDto.fromGroupList(resultList)); }