private com.google.protobuf.SingleFieldBuilder<im.turms.plugin.livekit.core.proto.models.TrackInfo, im.turms.plugin.livekit.core.proto.models.TrackInfo.Builder, im.turms.plugin.livekit.core.proto.models.TrackInfoOrBuilder> getTrackFieldBuilder() {
            if (trackBuilder_ == null) {
                trackBuilder_ = new com.google.protobuf.SingleFieldBuilder<>(
                        getTrack(),
                        getParentForChildren(),
                        isClean());
                track_ = null;
            }
            return trackBuilder_;
        }
<pre>
set when event is track_*
</pre>

<code>.livekit.TrackInfo track = 8;</code>
turms-plugins/turms-plugin-livekit/src/main/java/im/turms/plugin/livekit/core/proto/webhook/WebhookEvent.java