// to compute it server-side, with the same type as the source object.
				if dstOpts.WantChecksum != nil && dstOpts.WantChecksum.Type.IsMultipartComposite() {
					dstOpts.WantServerSideChecksumType = dstOpts.WantChecksum.Type.Base()
					srcInfo.Reader.AddServerSideChecksumHasher(dstOpts.WantServerSideChecksumType)
					dstOpts.WantChecksum = nil
				}
			} else {

		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		if dstOpts.IndexCB != nil {
			dstOpts.IndexCB = compressionIndexEncrypter(objectEncryptionKey, dstOpts.IndexCB)
		}
	}

	srcInfo.PutObjReader = pReader
	copyObjectPart := objectAPI.CopyObjectPart

	// Copy source object to destination, if source and destination

	if !dstOpts.NoAuditLog {
		auditObjectErasureSet(ctx, "CopyObject", dstObject, &er)
	}

	// This call shouldn't be used for anything other than metadata updates or adding self referential versions.
	if !srcInfo.metadataOnly {
		return oi, NotImplemented{}
	}

	if !dstOpts.NoLock {
		lk := er.NewNSLock(dstBucket, dstObject)

	CopyObject(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (objInfo ObjectInfo, err error)
	DeleteObject(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error)