private Result <HashSet <string> > ReadWords(string path, ReaderFinder readerFinder)
{
return(File.Exists(path)
.AsResult()
.FailIf(e => !e, $"Файла {path} не существует")
.Then(e => readerFinder.Find(path))
.Then(reader => reader.ReadWords(path))
.Then(words => words.ToHashSet())
.OnFail(HandleError));
}
