public int lookup(String unit)
  {
    FSA.State state = _fsa.getState();
    // state.start(); // getState does this for us
    state.delta(unit);
    if(state.isFinal()){
      return state.hash();
    }
    return -1;
  }
Class for accessing the concept network automata.

@author  <a href="mailto:boros@yahoo-inc.com">Peter Boros</a>
fsa/src/main/java/com/yahoo/fsa/conceptnet/ConceptNet.java