public Map<String, String> toMap() {
    final JsonMapper mapper = TileArchiveMetadataDeSer.internalMapMapper();
    return new LinkedHashMap<>(mapper.convertValue(this, new TypeReference<>() {}));
  }
Returns a map with all key-value pairs from this metadata entry, including {@link #others} hoisted to top-level
keys.
planetiler-core/src/main/java/com/onthegomap/planetiler/archive/TileArchiveMetadata.java