docs: public Deferred<Object> deleteUidAsync(final String type, final String name) {
      final UniqueIdType uid_type = UniqueId.stringToUniqueIdType(type);
      switch (uid_type) {
      case METRIC:
        return metrics.deleteAsync(name);
      case TAGK:
        return tag_names.deleteAsync(name);
      case TAGV:
        return tag_values.deleteAsync(name);
      default:
        throw new IllegalArgumentException("Unrecognized UID type: " + uid_type);
      }
    }