code: public static final Renderer<Long> instance() { // NOPMD it's thread save!
      if (LongRendererWithoutSeparator.instanceRenderer == null) {
        synchronized (LongRendererWithoutSeparator.class) {
          if (LongRendererWithoutSeparator.instanceRenderer == null) {
            LongRendererWithoutSeparator.instanceRenderer = new LongRendererWithoutSeparator();
          }
        }
      }
      return LongRendererWithoutSeparator.instanceRenderer;
    }
docs: returns the instance.
  
  @return CurrencyDoubleRenderer