code: @Override
      public Iterable<IChemModel> chemModels() {
          return new Iterable<IChemModel>() {
  
              @Override
              public Iterator<IChemModel> iterator() {
                  return new ChemModelIterator();
              }
          };
      }
docs: Returns an Iterable to ChemModels in this container.
  
  @return    The Iterable to ChemModels in this container
  @see       #addChemModel