/**
     * @param scheme either "http" or "https".
     */
    fun scheme(scheme: String) =
      apply {
        when {
          scheme.equals("http", ignoreCase = true) -> this.scheme = "http"
          scheme.equals("https", ignoreCase = true) -> this.scheme = "https"
          else -> throw IllegalArgumentException("unexpected scheme: $scheme")
        }
      }

      assertFailsWith<IllegalStateException> {
        HttpUrl.Builder().scheme("http").build()
      }
    assertThat(noHost.message).isEqualTo("host == null")
    val noScheme =
      assertFailsWith<IllegalStateException> {
        HttpUrl.Builder().host("host").build()
      }
    assertThat(noScheme.message).isEqualTo("scheme == null")
  }

  @Test
  fun builderToString() {

                }
            }
        }

        formSchemeList.forEach(p -> {
            final Hc5FormScheme scheme = p.getFirst();
            final Credentials credentials = p.getSecond();
            scheme.authenticate(credentials, (request, consumer) -> {

                // request header
                for (final Header header : requestHeaderList) {

                }
            }
        }

        formSchemeList.forEach(p -> {
            final Hc4FormScheme scheme = p.getFirst();
            final Credentials credentials = p.getSecond();
            scheme.authenticate(credentials, (request, consumer) -> {

                // request header
                for (final Header header : requestHeaderList) {

          ).hostnameVerifier(RecordingHostnameVerifier())
          .build()
      scheme = "https"
    } else {
      server.protocols = listOf(Protocol.H2_PRIOR_KNOWLEDGE)
      client =
        clientTestRule
          .newClientBuilder()
          .protocols(listOf(Protocol.H2_PRIOR_KNOWLEDGE))
          .build()
      scheme = "http"
    }
  }

  @AfterEach fun tearDown() {

labels.popularWord=Popular Word
labels.ignoreFailureType=Ignored Failure Type
labels.lastAccessTime=Last Access Time
labels.notificationTo=Notification To
labels.num=Num
labels.pn=Page Number
labels.protocolScheme=Scheme
labels.purgeByBots=Purge Bots
labels.logLevel=Log Level
labels.purgeSearchLogDay=Purge Search Log
labels.query=Query
labels.queryId=Query ID
labels.rt=rt
labels.searchLog=Search Log
labels.sort=Sort

    builder.add("", "pin1", "pin2")
  }

  @Test
  fun challenge() {
    var challenge = Challenge("", mapOf("" to ""))
    challenge = Challenge("", "")
    val scheme: String = challenge.scheme
    val authParams: Map<String?, String> = challenge.authParams
    val realm: String? = challenge.realm
    val charset: Charset = challenge.charset

labels.popularWord=Popular Word
labels.ignoreFailureType=Ignored Failure Type
labels.lastAccessTime=Last Access Time
labels.notificationTo=Notification To
labels.num=Num
labels.pn=Page Number
labels.protocolScheme=Scheme
labels.purgeByBots=Purge Bots
labels.logLevel=Log Level
labels.purgeSearchLogDay=Purge Search Log
labels.query=Query
labels.queryId=Query ID
labels.rt=rt
labels.searchLog=Search Log
labels.sort=Sort

	public final fun charset ()Ljava/nio/charset/Charset;
	public fun equals (Ljava/lang/Object;)Z
	public fun hashCode ()I
	public final fun realm ()Ljava/lang/String;
	public final fun scheme ()Ljava/lang/String;
	public fun toString ()Ljava/lang/String;
	public final fun withCharset (Ljava/nio/charset/Charset;)Lokhttp3/Challenge;
}

public final class okhttp3/CipherSuite {

    responses returned by OkHttp itself, and it was an old mistake to permit
    application code to omit a message.

 *  The challenge's scheme and realm are now non-null. If you are calling
    `new Challenge(scheme, realm)` you must provide non-null values. These were
    never null in challenges created by OkHttp, but could have been null in
    application code that creates challenges.