default Object getTag(String key) {
    var result = tags().get(key);
    if (result != null) {
      return result;
    } else if (key.contains(".")) {
      return getDotted(key).rawValue();
    }
    return null;
  }
The key/value pairs on this element.
planetiler-core/src/main/java/com/onthegomap/planetiler/reader/WithTags.java