How to implement the service binding protocols

[MiSimon]

I would like to implement some of the missing network protocols.
For each of them a service binding protocol with a different guid exist, what would be the correct way of implementing the service binding protocols in a way they work with open_protocol?

The obvious way would be to create a struct for every guid but that would cause a lot of duplicates.

[nicholasbishop]

Maybe we could have a macro for creating these structs, like service_binding_protocol!(name-of-struct, guid)

[MiSimon]

This will just hide the duplicates but would be easy to use and requires no further changes, i will try and implement it that way.