public PersistNode <TK, TV, TI> ToPersistable(ITrieNode <TK, TV, TI> node)
{
var persistable = new PersistNode <TK, TV, TI>
{
Children = node.Children().Select(p =>
{
var c = ToPersistable(p.Value);
c.Key = p.Key;
return(c);
}).ToList(),
Values = node.Pairs().ToList()
};
return(persistable);
}