if (impl != null && (impl instanceof SubFlowImplementation)) {
Collection subs = performersLocal();
for (Iterator i = subs.iterator (); i.hasNext();) {
WfProcessLocal p = (WfProcessLocal)i.next();
try {
p.resume ();
} catch (NotRunningException e) {
throw new CannotResumeException (e.getMessage ());
} catch (NotSuspendedException e) {
// may safely by ignored, make checkstyle happy
continue;