assertThrows(IllegalArgumentException.class, mediaType::charset);
  }

  public void testGetCharset_unsupportedCharset() {
    MediaType mediaType = MediaType.parse("text/plain; charset=utf-wtf");
    assertThrows(UnsupportedCharsetException.class, mediaType::charset);
  }

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(
            MediaType.create("text", "plain"),