code: @Override
      public IRenderingElement generate(IAtomContainer ac, RendererModel model) {
          ElementGroup diagram = new ElementGroup();
          diagram.add(this.sceneGenerator.generate(ac, model));
          diagram.add(this.bondGenerator.generate(ac, model));
          diagram.add(this.atomGenerator.generate(ac, model));
          return diagram;
      }
docs: {@inheritDoc}