}

    protected Stream<BuildStep> nonEmptyPredecessors(BuildStep step) {
        HashSet<BuildStep> preds = new HashSet<>();
        nonEmptyPredecessors(step, preds, new HashSet<>());
        return preds.stream();
    }

    private void nonEmptyPredecessors(BuildStep step, Set<BuildStep> preds, Set<BuildStep> visited) {
        if (visited.add(step)) {
            step.predecessors.forEach(ch -> {

		b.Fatal(err)
	}

	creds := globalActiveCred
	token, err := authenticateNode(creds.AccessKey, creds.SecretKey)
	if err != nil {
		b.Fatal(err)
	}

	b.ResetTimer()
	b.ReportAllocs()
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			err = xjwt.ParseWithStandardClaims(token, xjwt.NewStandardClaims(), []byte(creds.SecretKey))
			if err != nil {
				b.Fatal(err)
			}

        TestCredentials creds = new TestCredentials("A", true, false, subject, false);

        // Act
        TestCredentials copy = creds.clone();

        // Assert
        assertNotSame(creds, copy, "clone must return a new instance");
        assertEquals(creds.getUserDomain(), copy.getUserDomain());
        assertEquals(creds.isAnonymous(), copy.isAnonymous());
        assertEquals(creds.isGuest(), copy.isGuest());

	})
	if err != nil {
		c.Fatalf("Error initializing client: %v", err)
	}

	// Validate that the client from sts creds can access the bucket.
	c.mustListObjects(ctx, minioClient, bucket)

	// Create an madmin client with user creds
	userAdmClient, err := madmin.NewWithOptions(s.endpoint, &madmin.Options{
		Creds:  cr.NewStaticV4(value.AccessKeyID, value.SecretAccessKey, value.SessionToken),
		Secure: s.secure,
	})
	if err != nil {

					z.Creds.AccessKey, err = dc.ReadString()
					if err != nil {
						err = msgp.WrapError(err, "Creds", "AccessKey")
						return
					}
				case "SecretKey":
					z.Creds.SecretKey, err = dc.ReadString()
					if err != nil {
						err = msgp.WrapError(err, "Creds", "SecretKey")
						return
					}
				case "SessionToken":
					z.Creds.SessionToken, err = dc.ReadString()
					if err != nil {

	case madmin.S3:
		if creds.AWSRole {
			cfg.S3.AWSRole = true
		}
		if creds.AWSRoleWebIdentityTokenFile != "" && creds.AWSRoleARN != "" {
			cfg.S3.AWSRoleARN = creds.AWSRoleARN
			cfg.S3.AWSRoleWebIdentityTokenFile = creds.AWSRoleWebIdentityTokenFile
		}
		if creds.AccessKey != "" && creds.SecretKey != "" {
			cfg.S3.AccessKey = creds.AccessKey
			cfg.S3.SecretKey = creds.SecretKey
		}
	case madmin.Azure:

	}{
		// Test case - 1.
		// Filter contains more than (Prefix,Tag,And) rule
		{
			method:             http.MethodPut,
			bucketName:         bucketName,
			accessKey:          creds.AccessKey,
			secretKey:          creds.SecretKey,

    void testWithCredentials() {
        // Given
        Credentials creds = mock(Credentials.class);
        CIFSContext newContext = mock(CIFSContext.class);
        when(mockContext.withCredentials(creds)).thenReturn(newContext);

        // When
        CIFSContext context = mockContext.withCredentials(creds);

        // Then
        assertEquals(newContext, context);

    NodeConnection(N node) {
      this.node = checkNotNull(node);
    }

    static final class Pred<N> extends NodeConnection<N> {
      Pred(N node) {
        super(node);
      }

      @Override
      public boolean equals(@Nullable Object that) {
        if (that instanceof Pred) {
          return this.node.equals(((Pred<?>) that).node);
        } else {
          return false;
        }
      }

      @Override

		t.Fatal(err)
	}

	creds := globalActiveCred
	policy := "policy"
	testCases := []struct {
		accessKey string
		policy    string
		signature string
		errCode   APIErrorCode
	}{
		{"invalidAccessKey", policy, calculateSignatureV2(policy, creds.SecretKey), ErrInvalidAccessKeyID},
		{creds.AccessKey, policy, calculateSignatureV2("random", creds.SecretKey), ErrSignatureDoesNotMatch},