code: public static List<Map<IBond, IBond>> makeBondMapsOfAtomMaps(IAtomContainer ac1, IAtomContainer ac2,
              List<Map<IAtom, IAtom>> mappings) {
          List<Map<IBond, IBond>> bondMaps = new ArrayList<Map<IBond, IBond>>();
          for (Map<IAtom, IAtom> mapping : mappings) {
              bondMaps.add(makeBondMapOfAtomMap(ac1, ac2, mapping));
          }
          return bondMaps;
      }
docs: Returns bond maps between source and target molecules based on the atoms
  @param ac1 source molecule
  @param ac2 target molecule
  @param mappings mappings between source and target molecule atoms
  @return bond maps between source and target molecules based on the atoms