*/
  @CanIgnoreReturnValue
  public HostAndPort requireBracketsForIPv6() {
    checkArgument(!hasBracketlessColons, "Possible bracketless IPv6 literal: %s", host);
    return this;
  }

  @Override
  public boolean equals(@CheckForNull Object other) {
    if (this == other) {
      return true;
    }
    if (other instanceof HostAndPort) {
      HostAndPort that = (HostAndPort) other;

    HostAndPort hpNoPort5 = HostAndPort.fromHost("foo::123");

    HostAndPort hpWithPort1 = HostAndPort.fromParts("[foo::123]", 80);
    HostAndPort hpWithPort2 = HostAndPort.fromParts("foo::123", 80);
    HostAndPort hpWithPort3 = HostAndPort.fromString("[foo::123]:80");

    new EqualsTester()
        .addEqualityGroup(hpNoPort1, hpNoPort2, hpNoPort3, hpNoPort4, hpNoPort5)