{ if (renderer == null) throw new IllegalStateException(NULL_RENDERER);
try { errorIfInvalidState();
    public void setQuantizationMap(int w, int family, double coefficient,                                    boolean noiseReduction)    {        rwl.writeLock().lock();        {            if (renderer == null)                throw new IllegalStateException(NULL_RENDERER);                        renderer.setQuantizationMap(w, family, coefficient, noiseReduction);        }        rwl.writeLock().unlock();    }