code: public boolean allSaturated(IAtomContainer ac) throws CDKException {
          logger.debug("Are all atoms saturated?");
          for (int f = 0; f < ac.getAtomCount(); f++) {
              if (!isSaturated(ac.getAtom(f), ac)) return false;
          }
          return true;
      }
docs: Determines of all atoms on the AtomContainer have
  the right number the lone pair electrons.