@Test
	public void testAsEntrySetDescendingIterator() {
		populateStore(-3, -1, 1, 3);

		assertEquals(List.of(3L, 1L, -1L, -3L),
			IteratorUtils.toList(entrySet.descendingIterator())
					.stream()
					.map(Entry::getKey)
					.collect(Collectors.toList()));
		assertEquals(List.of(-3L, -1L, 1L, 3L),
			IteratorUtils.toList(rEntrySet.descendingIterator())
					.stream()
					.map(Entry::getKey)
					.collect(Collectors.toList()));
	}
This exists to verify behavior in {@link #testAsValuesSubIterator()}
Ghidra/Debug/ProposedUtils/src/test/java/ghidra/util/database/DBCachedObjectStoreTest.java