val headers =
      Headers.Builder()
        .add("Cache-Control: max-age=120")
    addHeaderLenient(headers, ": A")
    server.enqueue(
      MockResponse.Builder()
        .headers(headers.build())
        .body("body")
        .build(),
    )
    val response = get(server.url("/"))
    assertThat(response.header("")).isEqualTo("A")