*/
  public MediaType withCharset(Charset charset) {
    checkNotNull(charset);
    MediaType withCharset = withParameter(CHARSET_ATTRIBUTE, charset.name());
    // precache the charset so we don't need to parse it
    withCharset.parsedCharset = Optional.of(charset);
    return withCharset;
  }

  /** Returns true if either the type or subtype is the wildcard. */

   */
  public MediaType withCharset(Charset charset) {
    checkNotNull(charset);
    MediaType withCharset = withParameter(CHARSET_ATTRIBUTE, charset.name());
    // precache the charset so we don't need to parse it
    withCharset.parsedCharset = Optional.of(charset);
    return withCharset;
  }

  /** Returns true if either the type or subtype is the wildcard. */

  public void testWithCharset() {
    assertEquals(
        MediaType.parse("text/plain; charset=utf-8"),
        MediaType.parse("text/plain").withCharset(UTF_8));
    assertEquals(
        MediaType.parse("text/plain; charset=utf-8"),
        MediaType.parse("text/plain; charset=utf-16").withCharset(UTF_8));
  }

  public void testHasWildcard() {
    assertFalse(PLAIN_TEXT_UTF_8.hasWildcard());
    assertFalse(JPEG.hasWildcard());

    val authParams: Map<String?, String> = challenge.authParams
    val realm: String? = challenge.realm
    val charset: Charset = challenge.charset
    val utf8: Challenge = challenge.withCharset(Charsets.UTF_8)
  }

  @Test
  fun cipherSuite() {
    var cipherSuite: CipherSuite = CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
    cipherSuite = CipherSuite.forJavaName("")