}
c.setMergePolicy(newMergePolicy(r));
if (rarely(r)) {
c.setMergedSegmentWarmer(new SimpleMergedSegmentWarmer(c.getInfoStream()));
}
c.setUseCompoundFile(r.nextBoolean());
c.setReaderPooling(r.nextBoolean());
c.setReaderTermsIndexDivisor(TestUtil.nextInt(r, 1, 4));
c.setCheckIntegrityAtMerge(r.nextBoolean());