objective c - Which notification sends Deezer mac app -

i'm developing miniplayer app controling music player apps on mac os (itunes, spotify..) using scripting bridge objective-c. add support deezer mac app can't find name of notification send deezer app if player state changed. set observer in nsnotificationcenter. spotify e.g. "com.spotify.client.playbackstatechanged". can tell me name?

the status of player available through apple script :

application -> player state.

it boolean style variable (true: playing / false: not playing).

note: can see available info if open dictionary apple script editor:

file > open dictionary > select deezer.app