code: @Override
      public IRenderingElement generate(IAtomContainer container, RendererModel model) {
          ElementGroup group = new ElementGroup();
          this.ringSet = this.getRingSet(container);
  
          //Sort the ringSet consistently to ensure consistent rendering.
          //If this is omitted, the bonds may 'tremble'.
          ringSet.sortAtomContainers(new AtomContainerComparatorBy2DCenter());
  
          for (IBond bond : container.bonds()) {
              group.add(MarkedElement.markupBond(this.generate(bond, model), bond));
          }
          return group;
      }
docs: {@inheritDoc}