/**
 * A callback for accepting the results of a {@link java.util.concurrent.Future} computation
 * asynchronously.
 *
 * <p>To attach to a {@link ListenableFuture} use {@link Futures#addCallback}.
 *
 * @author Anthony Zana
 * @since 10.0
 */
@GwtCompatible
public interface FutureCallback<V extends @Nullable Object> {
  /** Invoked with the result of the {@code Future} computation when it is successful. */

		t.Errorf("json marshal is not empty slice, got %v", string(r))
	}

	var results []User
	DB.Preload("Team").Preload("Languages").Preload("Friends").Find(&results, "name = ?", user.Name)

	if r, err := json.Marshal(&results); err != nil {
		t.Errorf("failed to marshal users, got error %v", err)

	}

	datas := []struct {
		callbacks []callback
		err       string
		results   []string
	}{
		{
			callbacks: []callback{{h: c1}, {h: c2}, {h: c3}, {h: c4}, {h: c5}},
			results:   []string{"c1", "c2", "c3", "c4", "c5"},
		},
		{
			callbacks: []callback{{h: c1}, {h: c2}, {h: c3}, {h: c4}, {h: c5, before: "c4"}},
			results:   []string{"c1", "c2", "c3", "c5", "c4"},
		},
		{

                        if (hasNext || next != null) {
                            results[index] = false; // Mark as failed if unexpected result
                            return;
                        }
                    }
                    results[index] = true; // Mark as successful
                });
                threads[i].start();
            }

	time.Sleep(randomWait())

	results := make(chan itemOrErr[ObjectInfo], 100)
	ctx, cancel := context.WithCancel(j.ctx)
	defer cancel()
	if err := j.objLayer.Walk(ctx, minioMetaBucket, batchJobPrefix, results, WalkOptions{}); err != nil {
		batchLogIf(j.ctx, err)
		return
	}
	for result := range results {
		if result.Err != nil {
			batchLogIf(j.ctx, result.Err)
			continue
		}

				success := true
				if err := r.KeyRotate(ctx, api, result); err != nil {
					stopFn(result, err)
					batchLogIf(ctx, err)
					success = false
					if attempts >= retryAttempts {
						auditOptions := AuditLogOptions{
							Event:     "KeyRotate",
							APIName:   "StartBatchJob",
							Bucket:    result.Bucket,
							Object:    result.Name,
							VersionID: result.VersionID,
							Error:     err.Error(),
						}

		// Test case with keyMarker less than 0. (Test number 20).
		// {bucketNames[0], "", "min", "", "", -1, listMultipartResults[7], nil, true},
		// The result contains only one entry. The  KeyPrefix is set to the object name in the result.
		// Expecting the result to skip the KeyPrefix entry in the result (Test number 21).
		{bucketNames[0], "", "minio-object", "", "", 2, listMultipartResults[8], nil, true},
		// Test case containing prefix values.

            });
            threads[i].start();
        }

        for (Thread thread : threads) {
            thread.join();
        }

        for (boolean result : results) {
            assertTrue(result);
        }
    }

    /**
     * Test implementation of ThumbnailGenerator interface
     */
    private static class TestThumbnailGenerator implements ThumbnailGenerator {

    result = hash128to64(result + v, u);
    return result == 0 || result == 1 ? result + ~1 : result;
  }

  private static long shiftMix(long val) {
    return val ^ (val >>> 47);
  }

  /** Implementation of Hash128to64 from util/hash/hash128to64.h */
  @VisibleForTesting
  static long hash128to64(long high, long low) {
    long a = (low ^ high) * K3;
    a ^= a >>> 47;

	for _, nerr := range hostErrs {
		result := StartProfilingResult{NodeName: nerr.Host.String()}
		if nerr.Err != nil {
			result.Error = nerr.Err.Error()
		} else {
			result.Success = true
		}
		startProfilingResult = append(startProfilingResult, result)
	}

	// Create JSON result and send it to the client