code: @Override
      public IBitFingerprint getBitFingerprint(IAtomContainer container) throws CDKException {
          return this.getBitFingerprint(container, null, null);
      }
docs: Generates a fingerprint of the default size for the given
  AtomContainer, using path and ring metrics. It contains the
  informations from getBitFingerprint() and bits which tell if the structure
  has 0 rings, 1 or less rings, 2 or less rings ... 10 or less rings
  (referring to smallest set of smallest rings) and bits which tell if
  there is a fused ring system with 1,2...8 or more rings in it
  
  @param container The AtomContainer for which a Fingerprint is generated
  @return a bit fingerprint for the given <code>IAtomContainer</code>.