* otherwise returns an empty stream.
   */
  public static <T> Stream<T> stream(com.google.common.base.Optional<T> optional) {
    return optional.isPresent() ? Stream.of(optional.get()) : Stream.empty();
  }

  /**
   * If a value is present in {@code optional}, returns a stream containing only that element,
   * otherwise returns an empty stream.
   *

	ge.msg = msg
}

func (ge ErrConfigGeneric) Error() string {
	return ge.msg
}

// ErrConfigNotFound is an error to indicate
// that a config parameter is not found
type ErrConfigNotFound struct {
	ErrConfigGeneric
}

// Error creates an error message and wraps
// it with the error type specified in the type parameter
func Error[T ErrorConfig, PT interface {
	*T
	setMsg(string)

  // encountered when an authorizer, such as an external authorizer, doesn't support rules evaluation.
  optional bool incomplete = 3;

  // EvaluationError can appear in combination with Rules. It indicates an error occurred during
  // rule evaluation, such as an authorizer that doesn't support rule evaluation, and that

     * entry to be loaded, but an exception is thrown while loading the entry. In contrast to {@link
     * #recordMisses}, this method should only be called by the loading thread.
     *
     * @param loadTime the number of nanoseconds the cache spent computing or retrieving the new
     *     value prior to an exception being thrown
     */

///

### HTTPS Request

Now that the client and server (specifically the browser and the TLS Termination Proxy) have an **encrypted TCP connection**, they can start the **HTTP communication**.

So, the client sends an **HTTPS request**. This is just an HTTP request through an encrypted TLS connection.

<img src="/img/deployment/https/https04.svg">

### Decrypt the Request

  @CheckForNull private final transient @Nullable ImmutableMapEntry<K, V>[] table;
  // 'and' with an int to get a table index
  private final transient int mask;

  static <K, V> ImmutableMap<K, V> fromEntries(Entry<K, V>... entries) {
    return fromEntryArray(entries.length, entries, /* throwIfDuplicateKeys= */ true);
  }

  /**
   * Creates an ImmutableMap from the first n entries in entryArray. This implementation may replace

            throws ArtifactInstallationException;

    /**
     * Install an artifact from a particular file.
     *
     * @param source the file to install
     * @param artifact the artifact definition
     * @param localRepository the local repository to install into
     * @throws ArtifactInstallationException if an error occurred installing the artifact
     */

_2019-05-19_

 *  Fix: Lock in a route when recovering from an HTTP/2 connection error. We had a bug where two
    calls that failed at the same time could cause OkHttp to crash with a `NoSuchElementException`
    instead of the expected `IOException`.

 *  Fix: Don't crash with a `NullPointerException` when formatting an error message describing a
    truncated response from an HTTPS proxy.


## Version 3.14.1

_2019-04-10_

 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */

 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3