func isErrBucketNotFound(err error) bool {
	var bkNotFound BucketNotFound
	return errors.As(err, &bkNotFound)
}

// isErrReadQuorum check if the error type is InsufficientReadQuorum
func isErrReadQuorum(err error) bool {
	var rquorum InsufficientReadQuorum
	return errors.As(err, &rquorum)
}

// isErrWriteQuorum check if the error type is InsufficientWriteQuorum

			// version being purged is already not found on target.
			if !rinfo.VersionPurgeStatus.Empty() {
				rinfo.VersionPurgeStatus = Complete
				return
			}
		case isErrReadQuorum(serr), isErrWriteQuorum(serr):
			// destination has some quorum issues, perform removeObject() anyways
			// to complete the operation.
		default:

		if opts.SkipRebalancing && z.IsPoolRebalancing(pinfo.Index) {
			continue
		}
		if pinfo.Err == nil {
			// found a pool
			return pinfo, z.poolsWithObject(poolObjInfos, opts), nil
		}

		if isErrReadQuorum(pinfo.Err) && !opts.MetadataChg {
			// read quorum is returned when the object is visibly
			// present but its unreadable, we simply ask the writes to
			// schedule to this pool instead. If there is no quorum

		if err == nil && opts.CheckPrecondFn(obj) {
			return objInfo, PreConditionFailed{}
		}
		if err != nil && !isErrVersionNotFound(err) && !isErrObjectNotFound(err) && !isErrReadQuorum(err) {
			return objInfo, err
		}
	}

	// Validate input data size and it can never be less than -1.
	if data.Size() < -1 {
		bugLogIf(ctx, errInvalidArgument, logger.ErrorKind)