private EvictionAttributes createOverflowEvictionAttributes(int overflowCapacity) {
    return createLRUEntryAttributes(overflowCapacity, OVERFLOW_TO_DISK);
  }
Regression test for TRAC #41770: ConcurrentRegionOperationsJUnitTest fails with duplicate
create in an oplog
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskRegionJUnitTest.java