private void verifyOplogSizeZeroAfterRecovery(Region region) {
    assertEquals(
        Oplog.OPLOG_MAGIC_SEQ_REC_SIZE * 2 + Oplog.OPLOG_DISK_STORE_REC_SIZE * 2 + EMPTY_RVV_SIZE
            + Oplog.OPLOG_GEMFIRE_VERSION_REC_SIZE * 2,
        ((LocalRegion) region).getDiskRegion().testHook_getChild().getOplogSize());
  }
to validate the get operation performed on a byte array of length zero
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskRegRecoveryJUnitTest.java