private IEnumerable <SyntaxToken> myExtLexical(IEnumerable <SyntaxToken> tokens, Scope scope, LexicalExtension <SyntaxToken> extension) { string testResult = "my_ext_replaced " + RoslynCompiler.TokensToString(extension.Arguments) + " = " + RoslynCompiler.TokensToString(extension.Body); return(RoslynCompiler.ParseTokens(testResult)); }