val response = client.newCall(request).execute()
    assertThat("b").isEqualTo(response.body.string())
  }

  /** Make sure interceptors can interact with the OkHttp client.  */
  @Test
  fun interceptorMakesAnUnrelatedRequest() {
    server.enqueue(MockResponse.Builder().body("a").build()) // Fetched by interceptor.
    server.enqueue(MockResponse.Builder().body("b").build()) // Fetched directly.
    client =
      client