double[] weights = new double[4];
fs.addFeatureWeightsTo (weights);
assertTrue (weights[1] == 1.0);
fs.add (dict.lookupIndex ("bear"));
int[] feats = fs.toFeatureIndexSequence();
assertTrue (feats[0] == 0);
assertTrue (feats[1] == 1);
assertTrue (feats[2] == 2);
assertTrue (feats[3] == 3);
assertTrue (feats[4] == 1);