public void updateFirstRelationships() {
   for (RecordProxy<Long, NodeRecord, Void> change : recordChangeSet.getNodeRecords().changes()) {
     NodeRecord record = change.forReadingLinkage();
     txState.setFirstIds(record.getId(), record.getNextRel(), record.getNextProp());
   }
 }
 public RecordChanges<Long, NodeRecord, Void> getNodeRecords() {
   return recordChangeSet.getNodeRecords();
 }