code: @Override
      public IRingSet getRings(IBond bond) {
          IRingSet rings = bond.getBuilder().newInstance(IRingSet.class);
          Ring ring;
          for (int i = 0; i < getAtomContainerCount(); i++) {
              ring = (Ring) getAtomContainer(i);
              if (ring.contains(bond)) {
                  rings.addAtomContainer(ring);
              }
          }
          return rings;
      }
docs: Returns a vector of all rings that this bond is part of.
  
  @param   bond  The bond to be checked
  @return   A vector of all rings that this bond is part of