Vector aspv = asd.getPossibleValues();
Vector aspv = asd.getPossibleStates();
    public AssetBeliefState getAprioriBelief( String asset_name,                                              AssetStateDescriptor asd )            throws BelievabilityException    {        String asd_name = asd.getStateName();                 // Get a new AssetBeliefState        Vector aspv = asd.getPossibleValues();        AssetBeliefState apriori_belief_state =                new AssetBeliefState( asset_name,                                      asd_name,                                       aspv.size() );                // iterate through state descriptor values        Enumeration aspv_enum = aspv.elements();        while ( aspv_enum.hasMoreElements() )         {         StateValue sv = (StateValue) aspv_enum.nextElement();            String state_name = sv.getName();            // Set the probability in the AssetBeliefState            // to the apriori probability            // May throw BelievabilityException            apriori_belief_state.set                    ( state_name,                      _pomdp_model.getAprioriProbability( asset_name,                                                          asd_name,                                                          state_name ) );        } // while aspv_enum        return apriori_belief_state;           } // method getAprioriBelief