data.IsTruncated = isTruncated

	commonPrefixes := make([]CommonPrefix, 0, len(prefixes))
	for _, prefix := range prefixes {
		prefixItem := CommonPrefix{}
		prefixItem.Prefix = s3EncodeName(prefix, encodingType)
		commonPrefixes = append(commonPrefixes, prefixItem)
	}
	data.CommonPrefixes = commonPrefixes
	data.KeyCount = len(data.Contents) + len(data.CommonPrefixes)
	return data
}

				return
			}
		case "CommonPrefixes":
			var zb0003 uint32
			zb0003, bts, err = msgp.ReadArrayHeaderBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "CommonPrefixes")
				return
			}
			if cap(z.CommonPrefixes) >= int(zb0003) {
				z.CommonPrefixes = (z.CommonPrefixes)[:zb0003]
			} else {
				z.CommonPrefixes = make([]string, zb0003)
			}

	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
	}