code: public IRenderingElement generateBondElement(IBond bond, RendererModel model) {
          return generateBondElement(bond, bond.getOrder(), model);
      }
docs: Generate rendering elements for a bond, without ring elements but
  considering the type of the bond (single, double, triple).
  
  @param bond the bond to use when generating elements
  @param model the renderer model
  @return one or more rendering elements