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

		assertEquals(List.of(3L, 1L, -1L, -3L), IteratorUtils.toList(keySet.descendingIterator()));
		assertEquals(List.of(-3L, -1L, 1L, 3L), IteratorUtils.toList(rKeySet.descendingIterator()));
	}
This exists to verify behavior in {@link #testAsValuesSubIterator()}
Ghidra/Debug/ProposedUtils/src/test/java/ghidra/util/database/DBCachedObjectStoreTest.java