},
		},
		{
			metadata: map[string]string{
				"x-amz-object-lock-mode": "governance",
			},
			expected: map[string]string{
				"x-amz-object-lock-mode": "governance",
			},
			filterRetention: false,
		},
		{
			metadata: map[string]string{
				"x-amz-object-lock-mode":              "governance",
				"x-amz-object-lock-retain-until-date": "2020-02-01",
			},

}

// Enabled indicates object locking is enabled
const Enabled = "Enabled"

// RetMode - object retention mode.
type RetMode string

const (
	// RetGovernance - governance mode.
	RetGovernance RetMode = "GOVERNANCE"

	// RetCompliance - compliance mode.
	RetCompliance RetMode = "COMPLIANCE"
)

// Valid - returns if retention mode is valid
func (r RetMode) Valid() bool {
	switch r {

    non-backward-compatible API changes without a major release. Reviewers of
    your pull request will comment on any API compatibility issues
    [following API review practices](https://github.com/tensorflow/community/blob/master/governance/api-reviews.md).
*   When you contribute a new feature to TensorFlow, the maintenance burden is
    (by default) transferred to the TensorFlow team. This means that the benefit

		return complMultipartUpload.Parts[i].PartNumber < complMultipartUpload.Parts[j].PartNumber
	}) {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPartOrder), r.URL)
		return
	}

	// Reject retention or governance headers if set, CompleteMultipartUpload spec
	// does not use these headers, and should not be passed down to checkPutObjectLockAllowed