public static <T> Collector<T, ?, Optional<T>> toOptional() {
    return (Collector) TO_OPTIONAL;
  }

  private static final Object NULL_PLACEHOLDER = new Object();

  private static final Collector<@Nullable Object, ?, @Nullable Object> ONLY_ELEMENT =
      Collector.<@Nullable Object, ToOptionalState, @Nullable Object>of(
          ToOptionalState::new,
          (state, o) -> state.add((o == null) ? NULL_PLACEHOLDER : o),

   *
   * @see java.util.Collections#frequency(Collection, Object) Collections.frequency(Collection,
   *     Object)
   */
  public static int frequency(Iterable<?> iterable, @Nullable Object element) {
    if ((iterable instanceof Multiset)) {
      return ((Multiset<?>) iterable).count(element);
    } else if ((iterable instanceof Set)) {

```go
s3Client, err := minio.New("localhost:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
if err != nil {
 log.Fatalln(err)
}

object, err := os.Open("my-testfile")
if err != nil {
 log.Fatalln(err)
}
defer object.Close()
objectStat, err := object.Stat()

/**
 * DefaultEventSpyContext
 */
@Deprecated
public class DefaultEventSpyContext implements EventSpy.Context {

    private final Map<String, Object> data = new HashMap<>();

    @Override
    public Map<String, Object> getData() {
        return data;
    }

                }
            }
        },
        "components": {
            "schemas": {
                "HTTPValidationError": {
                    "title": "HTTPValidationError",
                    "type": "object",
                    "properties": {
                        "detail": {
                            "title": "Detail",
                            "type": "array",

      @Override
      public ImmutableMultiset<Object> create(List<?> keys) {
        ImmutableMultiset.Builder<Object> builder = ImmutableMultiset.builder();
        for (Object o : keys) {
          builder.add(o);
        }
        return builder.build();
      }
    },
    BUILDER_ADD_ALL_COLLECTION {
      @Override
      public ImmutableMultiset<Object> create(List<?> keys) {

	},
	ErrObjectLockInvalidHeaders: {
		Code:           "InvalidRequest",
		Description:    "x-amz-object-lock-retain-until-date and x-amz-object-lock-mode must both be supplied",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrObjectRestoreAlreadyInProgress: {
		Code:           "RestoreAlreadyInProgress",
		Description:    "Object restore is already in progress",
		HTTPStatusCode: http.StatusConflict,
	},

  }

  /**
   * A sensible definition of {@link #subMultiset(Object, BoundType, Object, BoundType)} in terms of
   * {@link #headMultiset(Object, BoundType) headMultiset} and {@link #tailMultiset(Object,
   * BoundType) tailMultiset}.
   *
   * <p>If you override either of these methods, you may wish to override {@link
   * #subMultiset(Object, BoundType, Object, BoundType)} to forward to this implementation.
   */

				fmt.Printf("\t%s\n", s)
			}
		}
		os.Exit(0)
	}

	if object == "" {
		log.Fatalln("object name is mandatory")
	}

	if shards != 0 {
		fmt.Println("Erasure distribution for the object", hashOrder(prefix+object, shards))
	}
	fmt.Println("Erasure setNumber for the object", sipHashMod(prefix+object, setCount, id)+1)

                    ],
                    "title": "Item",
                    "type": "object",
                },
                "ValidationError": {
                    "title": "ValidationError",
                    "required": ["loc", "msg", "type"],
                    "type": "object",
                    "properties": {
                        "loc": {
                            "title": "Location",