text: public TermData add(TermData t1, TermData t2) {if (t1 == NO_OUTPUT) {return t2;} else if (t2 == NO_OUTPUT) {return t1;}TermData ret;if (t2.bytes != null || t2.docFreq > 0) {ret = new TermData(t2.bytes, t2.docFreq, t2.totalTermFreq);} else {ret = new TermData(t1.bytes, t1.docFreq, t1.totalTermFreq);}return ret;}