@Override
    public void addSourceMap(String key, String value) {
        sourcesMap.put(key, value);
    }
@Test
    void addSourceMap() {
        Map<String, String> retrieved = kiePMMLFactoryModel.getSourcesMap();
        assertThat(retrieved).isEmpty();
        kiePMMLFactoryModel.addSourceMap("KEY", "VALUE");
        retrieved = kiePMMLFactoryModel.getSourcesMap();
        assertThat(retrieved).containsKey("KEY");
        assertThat(retrieved.get("KEY")).isEqualTo("VALUE");
    }