text: public void copyFrom(TermState _other) {assert _other instanceof BlockTermState : "can not copy from " + _other.getClass().getName();BlockTermState other = (BlockTermState) _other;super.copyFrom(_other);docFreq = other.docFreq;totalTermFreq = other.totalTermFreq;termBlockOrd = other.termBlockOrd;blockFilePointer = other.blockFilePointer;}