Function if

modules/tracktion_engine/model/tracks/tracktion_Track.cpp:477–486

void Track::updateTrackList()
{
    CRASH_TRACER

    if (TrackList::hasAnySubTracks (state))
    {
        if (trackList == nullptr)
        {
            trackList = std::make_unique<TrackList> (edit, state);
            trackList->initialise();
        }
    }
    else
    {
        trackList.reset();