require(cacheResponse == null) { "$name.cacheResponse != null" }
        require(priorResponse == null) { "$name.priorResponse != null" }
      }
    }

    open fun priorResponse(priorResponse: Response?) =
      apply {
        this.priorResponse = priorResponse
      }

    open fun trailers(trailersSource: TrailersSource): Builder =
      apply {

    }
    ```

    This above code relies on this `responseCount` extension val:

    ```kotlin
    val Response.responseCount: Int
      get() = generateSequence(this) { it.priorResponse }.count()
    ```
=== ":material-language-java: Java"
    ```java
      private final OkHttpClient client;

      public Authenticate() {
        client = new OkHttpClient.Builder()

      ),
    )
    server.enqueue(MockResponse(body = "C"))
    executeSynchronously("/a")
      .assertCode(200)
      .assertBody("C")
      .priorResponse()
      .assertCode(302)
      .assertHeader("Test", "Redirect from /b to /c")
      .priorResponse()
      .assertCode(301)
      .assertHeader("Test", "Redirect from /a to /b")

    // New connection.

	public final fun newBuilder ()Lokhttp3/Response$Builder;
	public final fun peekBody (J)Lokhttp3/ResponseBody;
	public final fun peekTrailers ()Lokhttp3/Headers;
	public final fun priorResponse ()Lokhttp3/Response;
	public final fun protocol ()Lokhttp3/Protocol;
	public final fun receivedResponseAtMillis ()J
	public final fun request ()Lokhttp3/Request;
	public final fun sentRequestAtMillis ()J

	public final fun newBuilder ()Lokhttp3/Response$Builder;
	public final fun peekBody (J)Lokhttp3/ResponseBody;
	public final fun peekTrailers ()Lokhttp3/Headers;
	public final fun priorResponse ()Lokhttp3/Response;
	public final fun protocol ()Lokhttp3/Protocol;
	public final fun receivedResponseAtMillis ()J
	public final fun request ()Lokhttp3/Request;
	public final fun sentRequestAtMillis ()J