void WrongWay()
{
// this will be a deadlock, there's actually only one thread. The async methods run on the same thread!
Task <Sandwich> sandwichTask = MakeBLT();
TaskAwaiter <Sandwich> awaiter = sandwichTask.GetAwaiter();
Sandwich result = awaiter.GetResult();
}
async Task PrintResult(Task <Sandwich> sandwichTask)
{
Sandwich sandwich = await sandwichTask; // then (sandwich) =>
{
WriteLine($"Your {sandwich.ToString()} is done!");
}
}