using continuations with for loops

Hello,

I would like to write something like

for (i <- 1 to 3) {
foo()
}

but foo() has a signature def branch(): Unit @suspendable because it
has a shift inside (using continuations).

I've read here http://www.scala-lang.org/node/4276 an answer by Tiark
Rompf explaining that we should use:

import scala.continuations.Loops._ and then use
dir.listFiles.toList.suspendable foreach { f => ... }. Making
.suspendable work for all Iterables is another item on my to-do list,
but for the moment the toList is required.

Unfortunately this package scala.continuations.Loops._ does not seem
to exist anymore :-(
Do you know if there is a replacement or another way to do it?
Thank you in advance,

Pierre