You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: iter.go
    path of file: ./repos/moby/vendor/github.com/hashicorp/go-immutable-radix
    
    the code of the file until where you have to start completion: package iradix

import (
	"bytes"
)

// Iterator is used to iterate over a set of nodes
// in pre-order
type Iterat
    
func (i *Iterator) recurseMin(n *Node) *Node {
	// Traverse to the minimum child
	if n.leaf != nil {
		return n
	}
	nEdges := len(n.edges)
	if nEdges > 1 {
		// Add all the other edges to the stack (the min node will be added as
		// we recurse)
		i.stack = append(i.stack, n.edges[1:])
	}
	if nEdges > 0 {
		return i.recurseMin(n.edges[0].node)
	}
	// Shouldn't be possible
	return nil
}