✅ await await ContinueWith

public interface IFoo
{
    public Task<List<int>> NumberSource();
    public Task<List<int>> Double(List<int> numbers);
}

public class Bar
{
    private readonly IFoo _foo;
    // ... 
    public async Task<List<int>> DoStuff()
    {
        // Why the double await here???????
        return await await _foo.NumberSource()
            .ContinueWith(async numbers => await _foo.Double(await numbers));
    }
}