### Java
```java
MockResponse response = new MockResponse.Builder()
    .addHeader("Content-Type", "application/json; charset=utf-8")
    .addHeader("Cache-Control", "no-cache")
    .body("{}")
    .build();
```

### Kotlin
```kotlin
val response = MockResponse.Builder()
  .addHeader("Content-Type", "application/json; charset=utf-8")
  .addHeader("Cache-Control", "no-cache")
  .body("{}")
  .build()
```

    public Map<String, Goal> goals;

    public List<AttributedString> header;
    public AttributedStyle style;
    public LineReader reader;

    public void addInHeader(String text) {
        addInHeader(AttributedStyle.DEFAULT, text);
    }

    public void addInHeader(AttributedStyle style, String text) {
        AttributedStringBuilder asb = new AttributedStringBuilder();
        asb.style(style).append(text);

        .Builder()
        .code(503)
        .addHeader("Connection", "Close")
        .addHeader("Retry-After", "0")
        .body("You took too long!")
        .onResponseEnd(ShutdownConnection)
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .code(503)
        .addHeader("Connection", "Close")
        .addHeader("Retry-After", "0")

     * by a colon and a value.
     */
    public fun addHeader(header: String): Builder =
      apply {
        headers_.add(header)
      }

    /**
     * Adds a new header with the name and value. This may be used to add multiple headers with the
     * same name.
     */
    public fun addHeader(
      name: String,
      value: Any,
    ): Builder =
      apply {

  fun createFactory(callFactory: Call.Factory): EventSource.Factory =
    EventSource.Factory { request, listener ->
      val actualRequest =
        if (request.header("Accept") == null) {
          request.newBuilder().addHeader("Accept", "text/event-stream").build()
        } else {
          request
        }

      RealEventSource(actualRequest, listener).apply {
        connect(callFactory)
      }
    }

  @JvmStatic

      execute(differentDnsUrl)
    }
  }

  @Test
  fun skipsOnRedirectWhenDnsDontMatch() {
    server.enqueue(
      MockResponse
        .Builder()
        .code(301)
        .addHeader("Location", url.newBuilder().host("differentdns.com").build())
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .body("unexpected call")
        .build(),
    )

    val header =
      when (response.code) {
        407 -> "Proxy-Authorization"
        else -> "Authorization"
      }
    return response.request
      .newBuilder()
      .addHeader(header, credential)
      .build()
  }

  private fun schemeMatches(response: Response): Boolean {
    if (scheme == null) return true
    return response.challenges().any { it.scheme.equals(scheme, ignoreCase = true) }

    // Indentation control for nested logging
    private int indentLevel = 0;
    private String indentString = Indentation.DEFAULT;

    public void addInHeader(String text) {
        addInHeader(AttributedStyle.DEFAULT, text);
    }

    public void addInHeader(AttributedStyle style, String text) {
        AttributedStringBuilder asb = new AttributedStringBuilder();
        asb.style(style).append(text);

    val body =
      MockSocketHandler()
        .sendResponse("ok")
        .exhaustResponse()
    server.enqueue(
      MockResponse
        .Builder()
        .clearHeaders()
        .addHeader("h1", "v1")
        .addHeader("h2", "v2")
        .trailers(headersOf("trailers", "boom"))
        .socketHandler(body)
        .build(),
    )
    val call =
      client.newCall(
        Request

        filter.doFilter(request, response, filterChain);

        verify(response).setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        verify(response).setHeader("WWW-Authenticate", "NTLM");
        verify(response).addHeader("WWW-Authenticate", "Basic realm=\"TestRealm\"");
        verify(filterChain, never()).doFilter(any(), any());
    }

    @Test
    void testDoFilter_alreadyAuthenticated_shouldProceed() throws Exception {