func (t *traversal) shouldSkip(n *mdag.Node) (bool, error) {
if t.opts.SkipDuplicates {
k, err := n.Key()
if err != nil {
return true, err
}
if _, found := t.seen[string(k)]; found {
return true, nil
}
t.seen[string(k)] = struct{}{}
}
return false, nil
}
