@Override
    public ConfigData get(String path) {
        return get(path, null);
    }
@Test
    void testGetEnvVarsByKeyList() {
        Set<String> keyList = new HashSet<>(Arrays.asList("test_var1", "secret_var2"));
        Set<String> keys = envVarConfigProvider.get(null, keyList).data().keySet();
        assertEquals(keyList, keys);
    }