public void GivenIHaveSetUpAModelWithContainingOfItems(int branches, int items)
{
var watch = new Stopwatch();
models = ModelGenerator.GenerateModels(branches, items).ToList();
watch.Stop();
Debug.WriteLine("generate time " + watch.Elapsed);
context.Exists("model", () => models);
for (int i = 0; i < branches; i++)
{
var i1 = i;
var token = context.For <Model>("model").Exists(model => model.Branches[i1]);
context.For <Item>(token).IsTrue(x => x.Valid);
}
}