Cannot dynamically add and remove interfaces from an existing path about dbus-rs

[diwic]

Hi,

As for dynamically adding and removing interfaces from a path, I'm happy to take a PR that implements such functionality.

As for having different backing data for different interfaces, this seems like a bad idea in general so I don't want to implement it in the API, but for people that want it that way, they can let the backing data for the object be a HashMap<IfaceToken, Box<dyn Any + Send>> (use String or dbus::strings::Interface instead of IfaceToken if that is simpler), and then do the lookup in the method handlers when necessary.

[sonnysasaka]

Hi diwic,

Thanks for your feedback. I created another pull request based on your feedback, i.e. I am adding add_interface and remove_interface without changing any backing data and the caller can share the same backing data if they need to. Please take a look at #388, thanks!