Pact Foundation

what exactly is the difference between these two ffi lib functions
`pactffi_new_interaction` <https://docs.rs/pact_ffi/latest/pact_ffi/mock_server/handles/fn.pactffi_new_interaction.html> and this
`pactffi_given`
<https://docs.rs/pact_ffi/latest/pact_ffi/mock_server/handles/fn.pactffi_given.html>

both introduces description to the interaction ?

or is that the pactffi_given is for only introducing provider state description ?

There was some reason for needing it in C++

You can set the description from either method, though

The way C++ constructors work, you can't pass the description in when the handle is created, so it has to be added later.

`pactffi_new_interaction` creates a new integration and sets the description. It is probably what you want to do.