scope := strings.Join([]string{
		currTime.Format(yyyymmdd),
		globalMinioDefaultRegion,
		string(serviceS3),
		"aws4_request",
	}, SlashSeparator)

	stringToSign := "AWS4-HMAC-SHA256" + "\n" + currTime.Format(iso8601Format) + "\n"
	stringToSign += scope + "\n"
	stringToSign += getSHA256Hash([]byte(canonicalRequest))

	date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))

      LinearTransformation result = inverse;
      return (result == null) ? inverse = createInverse() : result;
    }

    @Override
    public String toString() {
      return String.format("y = %g * x + %g", slope, yIntercept);
    }

    private LinearTransformation createInverse() {
      if (slope != 0.0) {
        return new RegularLinearTransformation(1.0 / slope, -1.0 * yIntercept / slope, this);

	}

	req, err := http.NewRequest(http.MethodPost, target.args.Endpoint.String(), bytes.NewReader(data))
	if err != nil {
		return err
	}

	// Verify if the authToken already contains
	// <Key> <Token> like format, if this is
	// already present we can blindly use the
	// authToken as is instead of adding 'Bearer'
	tokens := strings.Fields(target.args.AuthToken)
	switch len(tokens) {
	case 2:

    private final LinkedList<String> contextStack = new LinkedList<String>();

    @Override
    public void warning(String message) {
        LOGGER.warn(String.format("%s: %s", contextStack.getFirst(), message));
    }

    @Override
    public void start(String context) {
        contextStack.addFirst(context);
    }

    @Override
    public void finish() {

		actual, err := parseRestoreObjStatus(tc.String())
		if err != nil {
			t.Fatalf("Test %d: parse restore object failed: %v", i+1, err)
		}
		if actual.ongoing != tc.ongoing || actual.expiry.Format(http.TimeFormat) != tc.expiry.Format(http.TimeFormat) {
			t.Fatalf("Test %d: got %v expected %v", i+1, actual, tc)
		}
	}
}

// TestRestoreObjOnDisk tests restoreObjStatus' OnDisk method
func TestRestoreObjOnDisk(t *testing.T) {

var errUnexpected = StorageErr("unexpected error, please report this issue at https://github.com/minio/minio/issues")

// errCorruptedFormat - corrupted format.
var errCorruptedFormat = StorageErr("corrupted format")

// errCorruptedBackend - corrupted backend.
var errCorruptedBackend = StorageErr("corrupted backend")

// errUnformattedDisk - unformatted disk found.

                                    "maxLength": 2083,
                                    "minLength": 1,
                                    "type": "string",
                                    "format": "uri",
                                },
                                "name": "callback_url",
                                "in": "query",
                            }
                        ],

		},
	}

	for _, testCase := range testCases {
		t.Run(testCase.expectedOutput, func(t *testing.T) {
			gotOutput := ISO8601Format(testCase.date)
			t.Log("Go", testCase.date.Format(iso8601TimeFormat))
			if gotOutput != testCase.expectedOutput {
				t.Errorf("Expected %s, got %s", testCase.expectedOutput, gotOutput)
			}
		})
	}

        {
            "detail": [
                {
                    "type": "value_error",
                    "loc": ["query", "id"],
                    "msg": 'Value error, Invalid ID format, it must start with "isbn-" or "imdb-"',
                    "input": "wtf-yes",
                    "ctx": {"error": {}},
                }
            ]
        }
    )

        this.name = name;
        this.ownerClass = ownerClass;
    }

    public String getName() {
        return name;
    }

    @Override
    public String toString() {
        return String.format("%s.%s", ownerClass, name);
    }

    public TypeMetaData getType() {
        return type;
    }

    public void setType(TypeMetaData type) {
        this.type = type;
    }