Inheritance in playing skills?

So if I have an intent file in /opt/mycroft/skills/mycroft-playback-control.mycroftai/locale/en-us/PlayTrackArtist.intent such as:

Play (track|song|) {track} by (artist|) {artist}

And I have a decorator function in /opt/mycroft/skills/mycroft-playback-control.mycroftai/__init__.py, how should it then call a function in the Emby skill? Emby is a base class of the CommonPlaySkill, not the PlaybackControlSkill.

Thanks.

-Mike Mac