// CheckPreconditionFn returns true if precondition check failed.
type CheckPreconditionFn func(o ObjectInfo) bool

// EvalMetadataFn validates input objInfo and GetObjectInfo error and returns an updated metadata and replication decision if any
type EvalMetadataFn func(o *ObjectInfo, gerr error) (ReplicateDecision, error)

		zipInfoStr = string(opts.EncryptFn(archiveTypeEnc, zipInfo))
	}
	srcInfo.UserDefined[archiveTypeMetadataKey] = at
	popts := ObjectOptions{
		MTime:     srcInfo.ModTime,
		VersionID: srcInfo.VersionID,
		EvalMetadataFn: func(oi *ObjectInfo, gerr error) (dsc ReplicateDecision, err error) {
			oi.UserDefined[archiveTypeMetadataKey] = at
			oi.UserDefined[archiveInfoMetadataKey] = zipInfoStr
			return dsc, nil
		},
	}