But at some point, there was no other option than creating something that provided all these features, taking the best ideas from previous tools, and combining them in the best way possible, using language features that weren't even available before (Python 3.6+ type hints).

## Previous tools

_2018-11-16_

 *  **OkHttp now supports TLS 1.3.** This requires either Conscrypt or Java 11+.

 *  **Proxy authenticators are now asked for preemptive authentication.** OkHttp will now request
    authentication credentials before creating TLS tunnels through HTTP proxies (HTTP `CONNECT`).
    Authenticators should identify preemptive authentications by the presence of a challenge whose
    scheme is "OkHttp-Preemptive".

   */
  public static <K, V> Builder<K, V> builderWithExpectedKeys(int expectedKeys) {
    checkNonnegative(expectedKeys, "expectedKeys");
    return new Builder<>(expectedKeys);
  }

  /**
   * A builder for creating immutable {@code SetMultimap} instances, especially {@code public static
   * final} multimaps ("constant multimaps"). Example:
   *
   * <pre>{@code
   * static final Multimap<String, Integer> STRING_TO_INTEGER_MULTIMAP =

   */
  public static <K, V> Builder<K, V> builderWithExpectedSize(int expectedSize) {
    checkNonnegative(expectedSize, "expectedSize");
    return new Builder<>(expectedSize);
  }

  /**
   * A builder for creating immutable bimap instances, especially {@code public static final} bimaps
   * ("constant bimaps"). Example:
   *
   * <pre>{@code
   * static final ImmutableBiMap<String, Integer> WORD_TO_INT =

			writeErrorResponseJSON(ctx, w, apiErr, r.URL)
			return
		}
	}

	// Check if we are creating svc account for request sender.
	isSvcAccForRequestor := false
	if targetUser == requestorUser || targetUser == requestorParentUser {
		isSvcAccForRequestor = true
	}

	// If we are creating svc account for request sender, ensure
	// that targetUser is a real user (i.e. not derived
	// credentials).

		if len(k) > len(ReservedMetadataPrefixLower) && strings.EqualFold(k[:len(ReservedMetadataPrefixLower)], ReservedMetadataPrefixLower) {
			// Skip tierFVID, tierFVMarker keys; it's used
			// only for creating free-version.
			switch k {
			case tierFVIDKey, tierFVMarkerKey:
				continue
			}
		}
		if equals(k, "x-amz-storage-class") && string(v) == storageclass.STANDARD {
			continue
		}
		switch {

			// versions of Go, we skeptically parse the atime and ctime fields.
			// If we are unable to parse them and the prefix field looks like
			// an ASCII string, then we fallback on the pre-Go1.8 behavior
			// of treating these fields as the USTAR prefix field.
			//
			// Note that this will not use the fallback logic for all possible
			// files generated by a pre-Go1.8 toolchain. If the generated file

  // This may be an empty string.
  // +required
  // +kubebuilder:validation:Required
  // +kubebuilder:validation:MaxLength=32768
  optional string message = 6;
}

// CreateOptions may be provided when creating an API object.
message CreateOptions {
  // When present, indicates that modifications should not be
  // persisted. An invalid or unrecognized dryRun directive will

* Support configuring the Azure load balancer idle connection timeout for services ([#66045](https://github.com/kubernetes/kubernetes/pull/66045), [@cpuguy83](https://github.com/cpuguy83))
* Let service controller retry creating load balancer when persistUpdate failed due to conflict. ([#68087](https://github.com/kubernetes/kubernetes/pull/68087), [@grayluck](https://github.com/grayluck))

### SIG Apps

- The service controller will now retry creating the load balancer when `persistUpdate` fails due to conflict. ([#68087](https://github.com/kubernetes/kubernetes/pull/68087), [@grayluck](https://github.com/grayluck))