}
        };

        helper.tryStartOperation("test_op", null, 3);
        assertEquals(List.of(3, 2, 1, 0), retriesSeen);
    }

    @Test
    public void test_tryStartOperation_retryChain_exhausted() {
        // Simulate retry chain: cleanup always succeeds but create always fails
        final AtomicInteger cleanupCallCount = new AtomicInteger(0);