public im.turms.plugin.livekit.core.proto.models.ParticipantTracks.Builder addParticipantTracksBuilder(
                int index) {
            return getParticipantTracksFieldBuilder().addBuilder(index,
                    im.turms.plugin.livekit.core.proto.models.ParticipantTracks
                            .getDefaultInstance());
        }
<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