code: private static void getLargestAtomContainer(IAtomContainer firstAC, IAtomContainer secondAC) {
          if (firstAC.getAtomCount() < secondAC.getAtomCount()) {
              IAtomContainer tmp;
              try {
                  tmp = firstAC.clone();
                  firstAC = secondAC.clone();
                  secondAC = tmp.clone();
              } catch (CloneNotSupportedException e) {
                  // TODO Auto-generated catch block
                  e.printStackTrace();
              }
          }
      }
docs: FIXME: huh!?!?!