if t, ok := r.src.(etag.Tagger); ok {
		return t.ETag()
	}
	return nil
}

// MD5Current returns the MD5 checksum of the content
// that has been read so far.
//
// Calling MD5Current again after reading more data may
// result in a different checksum.
func (r *Reader) MD5Current() []byte {
	if r.disableMD5 {
		return r.checksum
	}
	return r.ETag()[:]
}

	return p.Reader.Size()
}

// MD5CurrentHexString returns the current MD5Sum or encrypted MD5Sum
// as a hex encoded string
func (p *PutObjReader) MD5CurrentHexString() string {
	md5sumCurr := p.rawReader.MD5Current()
	var appendHyphen bool
	// md5sumcurr is not empty in two scenarios
	// - server is running in strict compatibility mode
	// - client set Content-Md5 during PUT operation
	if len(md5sumCurr) == 0 {

					HTTPStatusCode: http.StatusBadRequest,
				}
			}
		}
		writeErrorResponse(ctx, w, apiErr, r.URL)
		return
	}

	w.Header()[xhttp.ETag] = []string{`"` + hex.EncodeToString(hreader.MD5Current()) + `"`}
	hash.TransferChecksumHeader(w, r)
	writeSuccessResponseHeadersOnly(w)
}

// Delete objectAPIHandlers

// DeleteObjectHandler - delete an object