String updateCsn = lookedup.get( csnAt ).getString();
assertEquals( csn, updateCsn );
assertEquals( csn, partition.getEntryCsnIndex().reverseLookup( entryId ) );
csn = csnF.newInstance().toString();
Entry modEntry = new DefaultEntry( schemaManager );
modEntry.add( csnAt, csn );
assertNotSame( csn, updateCsn );