static void Main(string[] args)
{
var a = new Code();
a.Add(new Using());
a.Add(new Using());
var n = new Namespace()
{
Name = "测试"
};
n.AddChunk(new Class()
{
Name = "测试"
});
n.AddChunk(new If());
a.Add(n);
File.WriteAllText("1.txt", a.ToString());
Console.WriteLine(a);
}