How to get to the defined on a from the ?

[ant elder]

I'm trying to get <binding.ws> to work without specifying all the WSDL info,
for example like this:

   <reference name="HelloWorldService"
promote="HelloWorldServiceComponent/helloWorldService">
       <interface.wsdl interface="
http://helloworld#wsdl.interface(HelloWorld)" />
       <binding.ws uri="HelloWorldServiceComponent/HelloWorldWebService" />
   </reference>

but i can't find any way to get to the whats defined in the <interface>
element of the <reference>. None of the runtime objects seem to have any
link back to the references InterfaceContract.

Should this be possible?

  ...ant