Prefix string

	// A character used to truncate the object prefixes.
	// NOTE: only supported delimiter is '/'.
	Delimiter string

	// CommonPrefixes contains all (if there are any) keys between Prefix and the
	// next occurrence of the string specified by delimiter.
	CommonPrefixes []string

	EncodingType string // Not supported yet.
}

// TransitionedObject transitioned object tier and status.

			[]string{
				"<Prefix>pfx2/</Prefix><KeyCount>2</KeyCount><MaxKeys>2</MaxKeys><Delimiter>/</Delimiter><IsTruncated>false</IsTruncated>",
				"<CommonPrefixes><Prefix>pfx2/c/</Prefix></CommonPrefixes><CommonPrefixes><Prefix>pfx2/d/</Prefix></CommonPrefixes>",
			},

	result, err := s3.core.ListObjectsV2(s3.Bucket, s3.Prefix, "", "", slashSeparator, 1)
	if err != nil {
		return false, s3.ToObjectError(err)
	}
	return len(result.CommonPrefixes) > 0 || len(result.Contents) > 0, nil
}

func newWarmBackendS3(conf madmin.TierS3, tier string) (*warmBackendS3, error) {
	u, err := url.Parse(conf.Endpoint)
	if err != nil {
		return nil, err
	}