return &PutObjReader{Reader: rawReader, rawReader: rawReader}
}

// RawServerSideChecksumResult returns the ServerSideChecksumResult from the
// underlying rawReader, since the PutObjReader might be encrypted data and
// thus any checksum from that would be incorrect.
func (p *PutObjReader) RawServerSideChecksumResult() *hash.Checksum {
	if p.rawReader != nil {
		return p.rawReader.ServerSideChecksumResult
	}