import java.io.Serializable;
import java.util.Map.Entry;
import java.util.Spliterator;
import java.util.function.Consumer;
import javax.annotation.CheckForNull;

/**
 * {@code values()} implementation for {@link ImmutableMap}.
 *
 * @author Jesse Wilson
 * @author Kevin Bourrillion
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

The values returned by [sha256.New] and [sha256.New224] now also implement the [encoding.BinaryAppender] interface...

  // An array of string values. If the operator is In or NotIn,
  // the values array must be non-empty. If the operator is Exists or DoesNotExist,
  // the values array must be empty. If the operator is Gt or Lt, the values
  // array must have a single element, which will be interpreted as an integer.
  // This array is replaced during a strategic merge patch.
  // +optional
  repeated string values = 3;
}

   *
   * <p>Weak values will be garbage collected once they are weakly reachable. This makes them a poor
   * candidate for caching; consider {@link #softValues} instead.
   *
   * <p><b>Note:</b> when this method is used, the resulting cache will use identity ({@code ==})
   * comparison to determine equality of values.
   *

	yyyymmdd        = "20060102"
)

type serviceType string

const (
	serviceS3  serviceType = "s3"
	serviceSTS serviceType = "sts"
)

// getCanonicalHeaders generate a list of request headers with their values
func getCanonicalHeaders(signedHeaders http.Header) string {
	var headers []string
	vals := make(http.Header)
	for k, vv := range signedHeaders {
		k = strings.ToLower(k)
		headers = append(headers, k)
		vals[k] = vv

  interpolation for file-based activation is limited to <<<$\{basedir}>>> (which was introduced in Maven 3 and is not deprecated
  in this context) and <<<$\{rootDirectory}>>> (introduced in Maven 4), system properties and user properties.

  Values are evaluated in sequence from different syntaxes:

*----+------+------+

    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.values().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testValuesRetainAllNullFromEmpty() {
    try {
      super.testValuesRemoveAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.values().retainAll(null) doesn't throws NPE.
    }
  }

    SerializableTester.reserializeAndAssert(map.entrySet());
    SerializableTester.reserializeAndAssert(map.keySet());
    assertEquals(
        Lists.newArrayList(map.values()),
        Lists.newArrayList(SerializableTester.reserialize(map.values())));
  }

    SerializableTester.reserializeAndAssert(map.entrySet());
    SerializableTester.reserializeAndAssert(map.keySet());
    assertEquals(
        Lists.newArrayList(map.values()),
        Lists.newArrayList(SerializableTester.reserialize(map.values())));
  }

                .map(s -> clientRuleCache.computeIfAbsent(s, t -> {
                    final String[] values = t.split(":", 2);
                    if (values.length != 2) {
                        return null;
                    }
                    return new Pair<>(values[0], Pattern.compile(values[1]));
                })).toList());
    }