code: func (n *fullNode) EncodeRLP(w io.Writer) error {
  	var nodes [17]node
  
  	for i, child := range &n.Children {
  		if child != nil {
  			nodes[i] = child
  		} else {
  			nodes[i] = nilValueNode
  		}
  	}
  	return rlp.Encode(w, nodes)
  }
docs: // EncodeRLP encodes a full node into the consensus RLP format.