response.put("indexVersion", skywalker.getVersion());
response.put("directoryImpl", skywalker.getDirImpl());
response.put("numDocs", reader.numDocs());
response.put("maxDoc", reader.maxDoc());
response.put("hasDeletions", reader.hasDeletions());
response.put("numDeletedDocs", reader.numDeletedDocs());
Set<FieldTermCount> ftc = skywalker.getFieldTermCounts();
response.put("numTerms", skywalker.getNumTerms());
Map indexFormatInfo = new HashMap();