public void addProperty(String key, String value) {
        store.put(key, value);
    }
@Test
    void getBoolean() {
        memConfig.addProperty("a", Boolean.TRUE.toString());
        Assertions.assertTrue(memConfig.getBoolean("a"));
        Assertions.assertFalse(memConfig.getBoolean("b", false));
        Assertions.assertTrue(memConfig.getBoolean("b", Boolean.TRUE));
    }