private StopGroupBean filterNonRevenueStopGroup(String agencyId, StopGroupBean group) {
List<String> stopIds = filterNonRevenueStopIds(agencyId, group.getStopIds());
group.setStopIds(stopIds);
if (group.getSubGroups() != null) {
List<StopGroupBean> subGroups = filterNonRevenueStopGroups(agencyId, group.getSubGroups());
if (!subGroups.isEmpty()) group.setSubGroups(subGroups);
else group.setSubGroups(null);
}
if (group.getStopIds().isEmpty() && group.getSubGroups() == null) return null;
return group;
}
