public String get(String key) {
        return properties.getProperty(key);
    }
@Test
    public void testGet_whenKeyExisting() {
        Properties props = new Properties();
        props.setProperty("key1", "value1");
        props.setProperty("key2", "value2");
        HazelcastProperties properties = new HazelcastProperties(props);

        assertEquals("value1", properties.get("key1"));
    }