code: func (r *ReceiptsRequest) Request(reqID uint64, peer *peer) error {
  	peer.Log().Debug("Requesting block receipts", "hash", r.Hash)
  	return peer.RequestReceipts(reqID, r.GetCost(peer), []common.Hash{r.Hash})
  }
docs: // Request sends an ODR request to the LES network (implementation of LesOdrRequest)