if len(credElements) < 5 {
		return ch, ErrCredMalformed
	}
	accessKey := strings.Join(credElements[:len(credElements)-4], SlashSeparator) // The access key may contain one or more `/`
	if !auth.IsAccessKeyValid(accessKey) {
		return ch, ErrInvalidAccessKeyID
	}
	// Save access key id.
	cred := credentialHeader{
		accessKey: accessKey,
	}
	credElements = credElements[len(credElements)-4:]
	var e error

	}{
		{alphaNumericTable[:accessKeyMinLen], true},
		{alphaNumericTable[:accessKeyMinLen+1], true},
		{alphaNumericTable[:accessKeyMinLen-1], false},
	}

	for i, testCase := range testCases {
		result := IsAccessKeyValid(testCase.accessKey)
		if result != testCase.expectedResult {
			t.Fatalf("test %v: expected: %v, got: %v", i+1, testCase.expectedResult, result)
		}
	}
}

func TestIsSecretKeyValid(t *testing.T) {

	return c.AccessKey == "" && c.SecretKey == "" && c.SessionToken == ""
}

// Validate validates if credentials are valid
func (c BatchJobReplicateCredentials) Validate() error {
	if !auth.IsAccessKeyValid(c.AccessKey) || !auth.IsSecretKeyValid(c.SecretKey) {
		return errInvalidArgument
	}
	return nil
}

// BatchJobReplicateTarget describes target element of the replication job that receives