Information about Web Farm Framework API is hard to find, so I think this may help some others like me who are interested in using WFF and web deploy APIs.
In this case, I wanted to get a list of all servers in a particular Web Farm and then push a file to all of them.
First step is to add references to these libreries in your project:
The DLLs for these libraries are located in respective folders under C:\Program Files\IIS
I used the following helper methods to do what I needed.More...