public Map<String, String> transform(Map<String, String> configs) {
        return transform(null, configs);
    }
@Test
    public void testReplaceVariable() {
        // Execution
        Map<String, String> result = configTransformer.transform(MY_CONNECTOR, Collections.singletonMap(MY_KEY, "${test:testPath:testKey}"));

        // Assertions
        assertEquals(TEST_RESULT, result.get(MY_KEY));
    }