@SuppressWarnings("unlikely-arg-type")
	@Test
	public void testAsKeySetContains() {
		try (Transaction tid = trans()) {
			MyObject obj = store.create(0);
			assertFalse(keySet.contains(null));
			assertFalse(keySet.contains("Wrong type"));
			assertTrue(keySet.contains(0L));
			store.delete(obj);
			assertFalse(values.contains(0L));
		}
	}
This exists to verify behavior in {@link #testAsValuesSubIterator()}
Ghidra/Debug/ProposedUtils/src/test/java/ghidra/util/database/DBCachedObjectStoreTest.java