[Axis2] how to describe async request-respone in WSDL (1.1 or 2)?

hi,

this may be obvious but i could not find an answer to it: how to 
describe in WSDL a Web Service that has request-response but is 
implemented with WS-Addressing and use two separate messages correlated 
by Reply-To message-id? they probably should have in-out MEP 
(http://www.w3.org/TR/2004/WD-wsdl20-extensions-20040803/#in-out) but 
how to describe in binding that two separate HTTP connection may be used 
(or even many transports)?

any pointers examples or docs are appreciated.

thanks,

alek

-- 
The best way to predict the future is to invent it - Alan Kay