cs file code formatting in program

CsCodeFormatWithRoslyn.cs

using System;

namespace ConsoleApp4
{
    using Microsoft.CodeAnalysis;
    using Microsoft.CodeAnalysis.Text;
    using Microsoft.CodeAnalysis.Formatting;
    public class Program
    {
        public static void Main(string[] args)
        {
            // original code
            var code = @"using System;
namespace 
a 
{ 
class 
b 
{
} 
}";
            using (var adhoc = new AdhocWorkspace())
            {
                var proj = adhoc.AddProject("hoge.csproj", LanguageNames.CSharp);
                var doc = proj.AddDocument("hoge.cs", SourceText.From(code));
                doc = Formatter.FormatAsync(doc).Result;
                Console.WriteLine($"{doc.GetTextAsync().Result}");
            }
        }
    }
}

project.json

{
  "version": "1.0.0-*",
  "buildOptions": {
    "emitEntryPoint": true
  },

  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    },
    "Microsoft.CodeAnalysis.CSharp": "1.3.2",
    "Microsoft.CodeAnalysis.CSharp.Workspaces": "1.3.2"
  },
  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "portable-net45"
      ]
    }
  }
}