public override SyntaxNode VisitCompilationUnit(CompilationUnitSyntax node)
{
if (!node.Options.Any(opt => !opt.ChildTokens().Any(t => t.Kind() == SyntaxKind.StrictKeyword)))
{
node = node.AddOptions(OptionStatement(Token(SyntaxKind.StrictKeyword), Token(SyntaxKind.OnKeyword)));
}
return(base.VisitCompilationUnit(node));
}