public static AttributeSyntax AddArgument(this AttributeSyntax @this,
     String @expression)
 {
     return @this.AddArgumentListArguments(
         SyntaxFactory.AttributeArgument(
             SyntaxFactory.GetStandaloneExpression(
                 SyntaxFactory.ParseExpression(@expression))));
 }
 public static AttributeSyntax AddArguments(this AttributeSyntax @this,
     params AttributeArgumentSyntax[] @attributeArguments)
 {
     return @this.AddArgumentListArguments(@attributeArguments);
 }