@Test
@DisplayName("Check returning IDENTITY when calling TargetFactory")
void checkIdentity() {

    Map<String, TSTargetType> emptyMap=new HashMap<>();
    Map<?,?> x1 =  TSTargetFactory.mapNamespaces(emptyMap, x -> x);
    Map<?,?> x2 =  TSTargetFactory.mapNamespaces(emptyMap, IDENTITY);
    Map<?,?> testee =  TSTargetFactory.mapNamespaces(emptyMap, IDENTITY);
    assertEquals(testee, x2);
    assertEquals(testee, x1);
}