for (FrequencyBlockTripIndex index : indices) {
List<BlockTripReference> tripReferences = new ArrayList<BlockTripReference>();
for (BlockTripEntry entry : index.getTrips()) {
BlockTripReference reference = ReferencesLibrary.getTripAsReference(entry);
tripReferences.add(reference);
}
FrequencyServiceIntervalBlock serviceIntervalBlock = index.getServiceIntervalBlock();