return false;
            }
        };

        helper.tryStartOperation("test_op");
        assertNull(passedData.get());
    }

    @Test
    public void test_tryStartOperation_twoArg_usesConfigRetry() {
        // tryStartOperation(name, data) should read maxRetry from FessConfig
        final AtomicInteger passedRetries = new AtomicInteger(-1);