assertNull(Callables.returning(null).call());

    Object value = new Object();
    Callable<Object> callable = Callables.returning(value);
    assertSame(value, callable.call());
    // Expect the same value on subsequent calls
    assertSame(value, callable.call());
  }

  @J2ktIncompatible
  @GwtIncompatible
  public void testAsAsyncCallable() throws Exception {
    final String expected = "MyCallableString";

			"dir/object1",
			[]string{"object0"},
		},
		// Test 3: remove an object inside a directory and checks if it is deleted
		// but other sibling object in the same directory still exists
		{
			"bucket3",
			[]objectUpload{{"dir/object1", "content"}, {"dir/object2", "content"}},
			"dir/object1",
			[]string{"dir/object2"},
		},

	// Get request range.
	var rs *HTTPRangeSpec
	var rangeErr error
	rangeHeader := r.Header.Get(xhttp.Range)
	if rangeHeader != "" {
		// Both 'Range' and 'partNumber' cannot be specified at the same time
		if opts.PartNumber > 0 {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRangePartNumber), r.URL)
			return
		}

		rs, rangeErr = parseRequestRangeSpec(rangeHeader)

        assertEquals(1, docList.size());
        assertEquals(0, deletedDocIdList.size());

        deletedDocIdList.clear();
        oldDocList.add(new HashMap<>(Map.of(//
                "_id", "001", // same id
                "config_id", "W01", //
                "doc_id", "1", //
                "url", "http://test.com/001"//
        )));
        documentSizeByQuery = oldDocList.size();

	s = strings.ReplaceAll(s, SlashSeparator, "_")
	s = strings.ReplaceAll(s, "-", "_")
	return "minio_" + s
}

// isDescendantOf returns true if it is a descendant of (or the same as)
// `ancestor`.
//
// For example:
//
//	 	/a, /a/b, /a/b/c are all descendants of /a.
//		/abc or /abd/a are not descendants of /ab.
func (cp collectorPath) isDescendantOf(arg string) bool {

	SkipRebalancing bool

	SrcPoolIdx int // set by PutObject/CompleteMultipart operations due to rebalance; used to prevent rebalance src, dst pools to be the same

	DataMovement bool // indicates an going decommisionning or rebalacing

	PrefixEnabledFn func(prefix string) bool // function which returns true if versioning is enabled on prefix

changes on the source object version, such as metadata updates via PutObjectTagging, PutObjectRetention, PutObjectLegalHold and COPY api are replicated in a similar manner to target version, with the `X-Amz-Replication-Status` again cycling through the same states.

The description above details one way replication from source to target w.r.t incoming object uploads and metadata changes to source object version. If active-active replication is configured, any incoming uploads and metadata changes...

      }

    return dateFormat.format(date)
  }

  /**
   * A timestamp like "191216030210Z" or "20191215190210-0800" for 2019-12-15T19:02:10-08:00. This
   * is the same as [UTC_TIME] with the exception of the 4-digit year.
   */
  val GENERALIZED_TIME =
    BasicDerAdapter(
      name = "GENERALIZED TIME",
      tagClass = DerHeader.TAG_CLASS_UNIVERSAL,
      tag = 24L,

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<FavoriteLog> selectPage(CBCall<FavoriteLogCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<FavoriteLog>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<FavoriteLogCB> cbLambda, EntityRowHandler<FavoriteLog> entityLambda) {

    public ListResultBean<Role> selectList(CBCall<RoleCB> cbLambda) {
        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<Role> selectPage(CBCall<RoleCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<Role>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RoleCB> cbLambda, EntityRowHandler<Role> entityLambda) {