code: func (d *Downloader) DeliverReceipts(id string, receipts [][]*types.Receipt) (err error) {
  	return d.deliver(id, d.receiptCh, &receiptPack{id, receipts}, receiptInMeter, receiptDropMeter)
  }
docs: // DeliverReceipts injects a new batch of receipts received from a remote node.