private fun headersToList(response: MockResponse.Builder): List<String> {
    val headers = response.build().headers
    return headers.map { (key, value) -> "$key: $value" }.toList()
  }

  @Test
  fun closeWithoutStart() {
    val server = MockWebServer()
    server.close()
  }

  @Test
  fun closeViaClosable() {
    val server: Closeable = MockWebServer()
    server.close()
  }

  @Test