static void Main(string[] args)
{
var fac = new INativeFactory(CreateNativeFactory());
var test = fac.CreateTest();
using (var cb = new MyCallback())
test.SetCallback(cb);
test.DoCallback("123");
Console.WriteLine("Removing callback");
test.SetCallback(null);
Console.WriteLine("Removed callback");
using (var concat = fac.Concat((Utf8String)"foo", (Utf8String)"bar"))
{
Console.WriteLine(concat.String);
}
}
