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

		assertEquals(List.of(1L, -1L),
			IteratorUtils.toList(keySet.subSet(-2L, true, 2L, true).descendingIterator()));
		assertEquals(List.of(-1L, 1L),
			IteratorUtils.toList(rKeySet.subSet(2L, true, -2L, true).descendingIterator()));
	}
This exists to verify behavior in {@link #testAsValuesSubIterator()}
Ghidra/Debug/ProposedUtils/src/test/java/ghidra/util/database/DBCachedObjectStoreTest.java