class SignatureQuotientGraph extends AbstractQuotientGraph {

    @Override
    /** {@inheritDoc} */
    public boolean isConnected(int index1, int index2) {
        IAtom atom1 = atomContainer.getAtom(index1);
        IAtom atom2 = atomContainer.getAtom(index2);
        return atomContainer.getBond(atom1, atom2) != null;
    }

    public  SignatureQuotientGraph(IAtomContainer atomContainer);
    public  SignatureQuotientGraph(IAtomContainer atomContainer, int height);

}