Asynchronous web service adapter

Dear JOpera team,

despite studying the manual and examples (ws_*, ecommerce.oml) I am still
wondering whether and how JOpera supports asynchronous SOAP interaction
out of the box ?

Neither RECEIVE / REPLY nor the MSG adapter seems to be appropriate. The
WSIF adapter is not available in 2.4.9 any more ("invalid component type"
error in the ws_* examples).

Do I need a proprietary adapter implementation such as described in
"12.13 Example Code for Asynchronous invocation" ?

Thank you