WSIF Invocation of document/literal Web Service

Hi all,

I have deployed a Web Service using Apache Axis2. The service uses 
document/literal with "wrapped" parameter style and provides a few 
simple test methods. You can find the WSDL definitions at 
http://www.mines-of-moria.de/OrderService.wsdl .

I used the Apache Axis (v1) WSDl2Java tool to generate an "interface" 
for the Web Service and tried to invoke this interface using WSIF. 
Unfortunately the following exception is thrown:

Exception in thread "main" org.apache.wsif.WSIFException: Method 
getString(class java.lang.String) was not found in portType 
{http://service.pojo.sample}DADocTestServicePortType
         at 
org.apache.wsif.base.WSIFClientProxy.findMatchingOperation(Unknown Source)
         at org.apache.wsif.base.WSIFClientProxy.invoke(Unknown Source)
         at $Proxy1.getString(Unknown Source)
         at 
at.ac.tuwien.infosys.dsg.dacoss.eval.v2.WSIFRunner.doStringInvocation(WSIFRunner.java:96)
         at 
at.ac.tuwien.infosys.dsg.dacoss.eval.v2.WSIFRunner.main(WSIFRunner.java:56)


Analogous exceptions are thrown if I try to invoke any other operation 
in this service using WSIF... as you can see in the WSDL as posted above 
the method that WSIF seems not to be finding is available just fine in 
the service ...

I tried to redeploy the same service using rpc/encoded, and with this 
encoding style the WSIF invocation worked smoothly ...

Is there any known limitation with WSIF and document/wrapped ?

thanks,
philipp