*
   * <p>Note that this parser identifies IPv6 literals solely based on the presence of a colon. To
   * perform actual validation of IP addresses, see the {@link InetAddresses#forString(String)}
   * method.
   *
   * @return {@code this}, to enable chaining of calls.
   * @throws IllegalArgumentException if bracketless IPv6 is detected.
   */
  @CanIgnoreReturnValue

        .isEqualTo(InetAddresses.forString("127.0.0.1"));

    // ::1 special case
    assertThat(InetAddresses.getCoercedIPv4Address(InetAddresses.forString("::1")))
        .isEqualTo(InetAddresses.forString("127.0.0.1"));

    // :: special case
    assertThat(InetAddresses.getCoercedIPv4Address(InetAddresses.forString("::")))

    // use InetAddresses.toUriString to convert the result to a string in
    // canonical form.
    InetAddress addr = null;
    try {
      addr = InetAddresses.forString(host);
    } catch (IllegalArgumentException e) {
      // It is not an IPv4 or IPv6 literal
    }

    if (addr != null) {
      return new HostSpecifier(InetAddresses.toUriString(addr));
    }