*     value
   */
  public static UnsignedInteger valueOf(String string, int radix) {
    return fromIntBits(UnsignedInts.parseUnsignedInt(string, radix));
  }

  /**
   * Returns the result of adding this and {@code val}. If the result would have more than 32 bits,
   * returns the low 32 bits of the result.
   *
   * @since 14.0
   */