.addHeader("Cache-Control: max-age=0")
        .build()
    val request = assertClientSuppliedCondition(response, "If-None-Match", "v1")
    assertThat(request.headers["If-None-Match"]).isEqualTo("v1")
    assertThat(request.headers["If-Modified-Since"]).isNull()
  }

  private fun assertClientSuppliedCondition(
    seed: MockResponse,
    conditionName: String,
    conditionValue: String,