@Override
 public boolean incrementToken() throws IOException {
   if (index >= tokens.length) return false;
   else {
     clearAttributes();
     Token token = tokens[index++];
     termAtt.setEmpty().append(token);
     offsetAtt.setOffset(token.startOffset(), token.endOffset());
     posIncAtt.setPositionIncrement(token.getPositionIncrement());
     flagsAtt.setFlags(token.getFlags());
     typeAtt.setType(token.type());
     payloadAtt.setPayload(token.getPayload());
     return true;
   }
 }
 @Override
 public boolean incrementToken() {
   if (upto < tokens.length) {
     final Token token = tokens[upto++];
     // TODO: can we just capture/restoreState so
     // we get all attrs...?
     clearAttributes();
     termAtt.setEmpty();
     termAtt.append(token.toString());
     posIncrAtt.setPositionIncrement(token.getPositionIncrement());
     posLengthAtt.setPositionLength(token.getPositionLength());
     offsetAtt.setOffset(token.startOffset(), token.endOffset());
     payloadAtt.setPayload(token.getPayload());
     return true;
   } else {
     return false;
   }
 }