Public Overloads Shared Function Start( _
   ByVal coroutine As Func(Of CoroutineOperation,IEnumerable(Of INotifyCompleted)), _
   Optional ByVal completedHandler As Action(Of CoroutineOperation) _
) As CoroutineOperation

Dim coroutine As Func(Of CoroutineOperation,IEnumerable(Of INotifyCompleted))
Dim completedHandler As Action(Of CoroutineOperation)
Dim value As CoroutineOperation
 
value = Coroutine.Start(coroutine, completedHandler)

public static CoroutineOperation Start( 
   Func<CoroutineOperation,IEnumerable<INotifyCompleted>> coroutine,
   Action<CoroutineOperation> completedHandler
)

public:
static CoroutineOperation^ Start( 
   Func<CoroutineOperation^,IEnumerable<INotifyCompleted^>^>^ coroutine,
   Action<CoroutineOperation^>^ completedHandler
) 

public void CoroutineSample2() {
  Coroutine.Start(Sample2Actions, (op) => {
    SaveResult sr = op.Result as SaveResult;
    MessageBox.Show("Save count = " + sr.SavedEntities.Count().ToString());
  });
}

private IEnumerable<INotifyCompleted> Sample2Actions(CoroutineOperation coop) {
  // Sample showing use of the CoroutineOperation during processing,
  // and returning a final result to the Coroutine.

  var mgr = new DomainModelEntityManager();

  // Get a few customers
  yield return mgr.Customers.Take(2).ExecuteAsync();
  // See what we got.
  var custs = (coop.Notifications.Last() as EntityQueryOperation<Customer>).Results;

  // Now get a few employees
  yield return mgr.Employees.Take(3).ExecuteAsync();
  // See what we've got
  var emps = (coop.Notifications.Last() as EntityQueryOperation<Employee>).Results;

  // We can also make changes and save.
  emps.ForEach(e => e.Notes = "Updated at " + DateTime.Now.ToString());
  yield return mgr.SaveChangesAsync();

  // Let's return the final result too.
  SaveResult sr = (coop.Notifications.Last() as EntitySaveOperation).SaveResult;
  yield return Coroutine.Return(sr);
}