code: func (p *peer) RequestHelperTrieProofs(reqID, cost uint64, reqs []HelperTrieReq) error {
  	p.Log().Debug("Fetching batch of HelperTrie proofs", "count", len(reqs))
  	return sendRequest(p.rw, GetHelperTrieProofsMsg, reqID, cost, reqs)
  }
docs: // RequestHelperTrieProofs fetches a batch of HelperTrie merkle proofs from a remote node.