call: Call,
          e: IOException,
        ): Unit = throw AssertionError()

        override fun onResponse(
          call: Call,
          response: Response,
        ) {
          try {
            responseRef.put(response)
          } catch (e: InterruptedException) {
            throw AssertionError()
          }
        }
      },
    )

        case WILL_CLOSE:
        case CLOSING:
        case CLOSED:
          throw new IllegalStateException("Cannot call finishToFuture() twice");

        case OPEN:
          throw new AssertionError();
      }
    }
    return future;
  }

  /**
   * Marks this step as the last step in the {@code ClosingFuture} pipeline. When this step is done,

        case WILL_CLOSE:
        case CLOSING:
        case CLOSED:
          throw new IllegalStateException("Cannot call finishToFuture() twice");

        case OPEN:
          throw new AssertionError();
      }
    }
    return future;
  }

  /**
   * Marks this step as the last step in the {@code ClosingFuture} pipeline. When this step is done,

    // Confirm the interceptor isn't exercised.
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(Interceptor { chain: Interceptor.Chain? -> throw AssertionError() })
        .build()
    assertThat(get(url).body.string()).isEqualTo("A")
  }

  @Test
  fun iterateCache() {
    // Put some responses in the cache.
    server.enqueue(

            }

            override fun connectFailed(
              uri: URI,
              address: SocketAddress,
              failure: IOException,
            ): Unit = throw AssertionError()
          },
        ).build()
    server2.enqueue(
      MockResponse(body = "This is the 2nd server!"),
    )
    server.enqueue(
      MockResponse(