@Test
public void testMappings() {

    assertEquals("b1", configurer.getMappingService().get("m1", "a1"));
    assertEquals("b2", configurer.getMappingService().get("m2", "a2"));
    assertEquals("b3", configurer.getMappingService().get("m3", "a3"));
    
    assertEquals("c1", configurer.getMappingService().get("m4", "d1"));
    assertEquals("c2", configurer.getMappingService().get("m5", "d2"));
    assertEquals("c3", configurer.getMappingService().get("m6", "d3"));
}