code: func (buh *blobUploadHandler) GetUploadStatus(w http.ResponseWriter, r *http.Request) {
  	if buh.Upload == nil {
  		buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadUnknown)
  		return
  	}
  
  	// TODO(dmcgowan): Set last argument to false in blobUploadResponse when
  	// resumable upload is supported. This will enable returning a non-zero
  	// range for clients to begin uploading at an offset.
  	if err := buh.blobUploadResponse(w, r, true); err != nil {
  		buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
  		return
  	}
  
  	w.Header().Set("Docker-Upload-UUID", buh.UUID)
  	w.WriteHeader(http.StatusNoContent)
  }
docs: // GetUploadStatus returns the status of a given upload, identified by id.