Request.Builder()
        .url(url)
        .header("Accept-Language", "fr-CA")
        .build()
    val response1 = client.newCall(request).execute()
    assertThat(response1.body.string()).isEqualTo("A")
    val request1 =
      Request.Builder()
        .url(url)
        .header("Accept-Language", "fr-CA")
        .build()
    val response2 = client.newCall(request1).execute()

        .cache(cache)
        .build()

    // Store a response in the cache.
    val url = server.url("/")
    val request1SentAt = System.currentTimeMillis()
    executeSynchronously("/", "Accept-Language", "fr-CA", "Accept-Charset", "UTF-8")
      .assertCode(200)
      .assertBody("A")
    val request1ReceivedAt = System.currentTimeMillis()
    assertThat(server.takeRequest().headers["If-None-Match"]).isNull()

bz
com.bz
net.bz
org.bz
edu.bz
gov.bz

// ca : https://en.wikipedia.org/wiki/.ca
ca
// ca geographical names
ab.ca
bc.ca
mb.ca
nb.ca
nf.ca
nl.ca
ns.ca
nt.ca
nu.ca
on.ca
pe.ca
qc.ca
sk.ca
yk.ca
// gc.ca: https://en.wikipedia.org/wiki/.gc.ca
// see also: http://registry.gc.ca/en/SubdomainFAQ
gc.ca

// cat : https://en.wikipedia.org/wiki/.cat
cat