private TreeNode(Formatter formatter, string prefix, string entry, int depth)
{
_formatter = formatter ?? throw new ArgumentNullException(nameof(formatter));
_prefix = prefix ?? throw new ArgumentNullException(nameof(prefix));
formatter.RegisterEntry(prefix.Length, depth);
_entry = entry;
_depth = depth;
}
private TreeNode(Formatter formatter, string prefix, string entry, int depth)
{
_formatter = formatter;
formatter.RegisterEntry(prefix.Length, depth);
_prefix = prefix;
_entry = entry;
_depth = depth;
}