.addEqualityGroup(MediaType.create("application", "atom+xml"))
        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // Non-UTF-8 Charset
  public void testEquals_nonUtf8Charsets() {
    new EqualsTester()
        .addEqualityGroup(MediaType.create("text", "plain"))
        .addEqualityGroup(MediaType.create("text", "plain").withCharset(UTF_8))