Changing MII WSDL Structure

Hi Experts,

When we expose MII transaction as web service using WSDLGen,it gives predefined format of WSDL.

Now my requirement is, in that predefined WSDL format i want to add some custom methods or i want to change the format of that WSDL.

Is it possible in MII to change WSDL format?

If yes,please guide me how we can achieve it?

Thanks in advance for your help.

Regards,

Neha