- Secure master -> node communication ([#11816](https://github.com/kubernetes/kubernetes/issues/11816))
- upgrading master doesn't upgrade kubectl ([#32538](https://github.com/kubernetes/kubernetes/issues/32538))
- Specific error message on failed rolling update issued by older kubectl against 1.4 master ([#32751](https://github.com/kubernetes/kubernetes/issues/32751))

    assertContent("mp3 data", response)
  }

  @Test
  fun ntripr1() {
    server.enqueue(
      MockResponse.Builder()
        .status("SOURCETABLE 200 OK")
        .addHeader("Server: NTRIP Caster 1.5.5/1.0")
        .addHeader("Date: 23/Jan/2004:08:54:59 UTC")
        .addHeader("Content-Type: text/plain")

Release notes of older releases can be found in:
- [CHANGELOG-1.2.md](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.2.md)
- [CHANGELOG-1.3.md](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.3.md)

    if (key == null) {
      return null;
    }
    int hash = hash(key);
    return segmentFor(hash).get(key, hash);
  }

  @CanIgnoreReturnValue // TODO(b/27479612): consider removing this
  V get(K key, CacheLoader<? super K, V> loader) throws ExecutionException {
    int hash = hash(checkNotNull(key));
    return segmentFor(hash).get(key, hash, loader);
  }

  @CheckForNull