static Replaceable newReplaceableMultimap(Storage storage, Storage.Params params) {
    return new DenseOrderedMultimap(storage, params);
  }
Returns a new multimap where each write sets the list of values for a key, and that order is preserved on read.
planetiler-core/src/main/java/com/onthegomap/planetiler/collection/LongLongMultimap.java