public SearchNode Find(string search, int pos = 0)
{
TraversalOption nextStep = new TraversalOption(Label, search, pos);
switch (nextStep.option)
{
case TraversalOptions.Split:
return((nextStep.commonPrefixLength + pos == search.Length) ? this : null);
case TraversalOptions.Found:
return(this);
case TraversalOptions.MoveNext:
return(NextNode?.Find(search, pos));
case TraversalOptions.MoveDown:
return(ChildNode?.Find(search, pos + nextStep.commonPrefixLength));
default:
return(null);
}
}