public int getParticipantTracksCount() {
            if (participantTracksBuilder_ == null) {
                return participantTracks_.size();
            } else {
                return participantTracksBuilder_.getCount();
            }
        }
<pre>
list of participants and their tracks
</pre>

<code>repeated .livekit.ParticipantTracks participant_tracks = 5;</code>
turms-plugins/turms-plugin-livekit/src/main/java/im/turms/plugin/livekit/core/proto/room/UpdateSubscriptionsRequest.java