@Test
	public void testAsEntrySetSubTailSet() {
		assertEquals(KeySpan.closed(-2L, 1L),
			entrySet.subSet(ent(-4), true, ent(2), false).tailSet(ent(-2), true).keySpan);
		assertEquals(KeySpan.closed(-1L, 2L),
			rEntrySet.subSet(ent(4), true, ent(-2), false).tailSet(ent(2), true).keySpan);
	}
This exists to verify behavior in {@link #testAsValuesSubIterator()}
Ghidra/Debug/ProposedUtils/src/test/java/ghidra/util/database/DBCachedObjectStoreTest.java