public Guid?Parse()
 {
     return(GenericStringParser.TryParseNullable <Guid>(_input, Guid.TryParse));
 }
 public char?Parse()
 {
     return(GenericStringParser.TryParseNullable <char>(_input, char.TryParse));
 }
 public bool?Parse()
 {
     return(GenericStringParser.TryParseNullable <bool>(_input, bool.TryParse));
 }