optional MIDILightProto playing = 26;
optional MIDILightProto play_ready = 40;
+ optional MIDIButtonProto next = 45;
+ optional int32 next_button_bank = 46;
+ optional MIDILightProto next_ready = 47;
+
optional MIDIButtonProto toggle_lock = 36;
optional int32 toggle_lock_bank = 37;
optional MIDILightProto locked = 38;