ReplicationSsecChecksumHeader:                               ReplicationSsecChecksumHeader,
	// Add more supported headers here.
}

// isDirectiveValid - check if tagging-directive is valid.
func isDirectiveValid(v string) bool {
	// Check if set metadata-directive is valid.
	return isDirectiveCopy(v) || isDirectiveReplace(v)
}

// Check if the directive COPY is requested.

		return
	}

	// Check if metadata directive is valid.
	if !isDirectiveValid(r.Header.Get(xhttp.AmzMetadataDirective)) {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMetadataDirective), r.URL)
		return
	}

	// check if tag directive is valid
	if !isDirectiveValid(r.Header.Get(xhttp.AmzTagDirective)) {