* "https://github.com/google/guava/wiki/CollectionUtilitiesExplained#maps">{@code Maps}</a>.
 *
 * @author Kevin Bourrillion
 * @author Mike Bostock
 * @author Isaac Shum
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Maps {
  private Maps() {}

  private enum EntryFunction implements Function<Entry<?, ?>, @Nullable Object> {

 * "https://github.com/google/guava/wiki/CollectionUtilitiesExplained#maps">{@code Maps}</a>.
 *
 * @author Kevin Bourrillion
 * @author Mike Bostock
 * @author Isaac Shum
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Maps {
  private Maps() {}

  private enum EntryFunction implements Function<Entry<?, ?>, @Nullable Object> {

      public Collection<V> values() {
        return new Maps.Values<Range<K>, V>(this) {
          @Override
          public boolean removeAll(Collection<?> c) {
            return removeEntryIf(compose(in(c), Maps.<V>valueFunction()));
          }

          @Override
          public boolean retainAll(Collection<?> c) {
            return removeEntryIf(compose(not(in(c)), Maps.<V>valueFunction()));
          }
        };

	cmd := &cobra.Command{
		Use:   "tag",
		Short: "Command group used to interact with revision tags",
		Long: `Command group used to interact with revision tags. Revision tags allow for the creation of mutable aliases
referring to control plane revisions for sidecar injection.

With revision tags, rather than relabeling a namespace from "istio.io/rev=revision-a" to "istio.io/rev=revision-b" to

          - pkg: go.opencensus.io
            desc: "do not use OpenCensus; use OpenTelemetry instead"
          - pkg: golang.org/x/exp/maps
            desc: "do not use golang.org/x/exp/maps; use istio.io/istio/pkg/maps instead"
          - pkg: maps
            desc: "do not use maps; use istio.io/istio/pkg/maps instead"
          - pkg: golang.org/x/exp/slices

			objInfo.Expires = t.UTC()
		}
	}

	// Extract etag from metadata.
	objInfo.ETag = extractETag(fi.Metadata)

	// Add user tags to the object info
	tags := fi.Metadata[xhttp.AmzObjectTagging]
	if len(tags) != 0 {
		objInfo.UserTags = tags
	}

	// Add replication status to the object info
	objInfo.ReplicationStatusInternal = fi.ReplicationState.ReplicationStatusInternal

		ilmNewerNoncurrentVersions = "ilm-newer-noncurrent-versions"
		ilmNoncurrentDays          = "ilm-noncurrent-days"
	)
	tags := make(map[string]string, 5)
	if src > lcEventSrc_None {
		tags[ilmSrc] = src.String()
	}
	tags[ilmAction] = event.Action.String()
	tags[ilmRuleID] = event.RuleID

	if !event.Due.IsZero() {
		tags[ilmDue] = event.Due.Format(iso8601Format)
	}

	// rule with Transition/NoncurrentVersionTransition in effect

	defer r.Unlock()
	// Search of tag key already exists in tags
	var updated bool
	for _, tag := range r.tags {
		if tag.Key == key {
			tag.Val = val
			updated = true
			break
		}
	}
	if !updated {
		// Append to the end of tags list
		r.tags = append(r.tags, KeyVal{key, val})
	}
	return r
}

// GetTags - returns the user defined tags
func (r *ReqInfo) GetTags() []KeyVal {
	if r == nil {

        final Object tagsObj = existingSource.get(FieldNames.TAGS);
        if (tagsObj instanceof List) {
            @SuppressWarnings("unchecked")
            final List<String> existingValues = (List<String>) tagsObj;
            concatValues(existingValues, tags);
            map.put(FieldNames.TAGS, existingValues);
        } else {
            map.put(FieldNames.TAGS, tags);
        }

    assertTrue(entries.contains(Maps.<String, @Nullable Boolean>immutableEntry("b", null)));
    assertTrue(
        entries.contains(Maps.<@Nullable String, @Nullable Boolean>immutableEntry(null, null)));

    assertFalse(entries.contains(Maps.<String, @Nullable Boolean>immutableEntry("c", null)));
    assertFalse(entries.contains(Maps.<@Nullable String, Boolean>immutableEntry(null, true)));
  }