#19-LoadingArrayAssetsAtPath contains a method that doesn't exist

[gekidoslair]

Tip #19 looks, great, would love to try it out, except...it has this line:

//get the contents of the folder's full path (excluding any meta files) sorted alphabetically IEnumerable<string> fullpaths = Directory.GetFiles(FullPathForRelativePath(path)).Where(x => !x.EndsWith(".meta")).OrderBy(s => s);

FullPathForRelativePath() is not defined anywhere.