Call Log.p(…) in native iOS code (Codename One)

I am writing a real time library for Codename one by wrapping the native libraries of Ably. I am invoking native interfaces to include the libraries for each platform, but how can I call Codename one code from the native interface or emit an event? For example, if I subscribe from an iOS client, how can tell the normal Codename One code that a message has been received?