public void ReservedWords(string word)
 {
     ParseBlockTest(word,
                    new DirectiveBlock(
                        Factory.MetaCode(word).Accepts(AcceptedCharactersInternal.None)
                        ),
                    RazorDiagnosticFactory.CreateParsing_ReservedWord(
                        new SourceSpan(SourceLocation.Zero, word.Length), word));
 }