/// <summary>Asynchronously executes a sequence of tasks, maintaining a list of all tasks processed.</summary>
/// <param name="factory">The TaskFactory to use to create the task.</param>
/// <param name="functions">
/// The functions that generate the tasks through which to iterate sequentially.
/// Iteration will cease if a task faults.
/// </param>
/// <returns>A Task that will return the list of tracked tasks iterated.</returns>
public static Task <IList <Task> > TrackedSequence(this TaskFactory factory, params Func <Task> [] functions)
{
var tcs = new TaskCompletionSource <IList <Task> >();
factory.Iterate(TrackedSequenceInternal(functions, tcs));
return(tcs.Task);
}
