Auto-generate tasks (Task Parallel Library) from WSDL

Hi SAKryukov, nice to hear from you again!

I'm making up the following example, so please bear with me if I make some mistake. Lets say I have a WSDL file on disk, and wishes to auto-generate code from it:

SvcUtil.exe some.wsdl /noConfig /language:cs /out:AutoGeneratedFile.cs /targetClientVersion:Version35 /async

I am auto-generating a file called 'AutoGeneratedFile.cs' from the WSDL called 'some.wsdl'. Because I use the '/async' switch, my generated code looks like this:

public interface MyInterface
{
string GetSomeProperty();
IAsyncResult BeginGetSomeProperty(AsyncCallback callback, object asyncState);
string EndGetSomeProperty(IAsyncResult result);
}

This is all fine, the code is generated using the callback/delegate-based async pattern, but I would like it to use TPL instead, i.e.:

public interface MyInterface
{
Task<string> GetSomePropertyAsync();
}

Is this possible, either by configuring svcutil or by using another auto-generating tool? (material for another CodeProject article perhaps :-))