Interfaces

[Ryan]

Hi all,

Is it possible to check if a web service implements a specific
interface? I've given it a quick try and can't seem to get it to work.
I assume that it isn't possible because web services are
platform/language independant?

If the answer to the above is no, what is the best way to make sure web
services, written by third parties have specific methods with the
correct parameters etc?

Thanks in advance.

Ryan