desc.forwardField("idA", "idB");
desc.forwardField("testA", "testB");
desc.concatField("blubB", "#", "blubA", "blaA");
installTransformation(desc);
ModelA model = new ModelA();
model.setIdA("test1");
model.setTestA("test2");
model.setBlubA("test3");
model.setBlaA("test4");
ModelB result = transformModelAToModelB(model);
assertThat(result.getIdB(), is("test1"));
assertThat(result.getTestB(), is("test2"));
assertThat(result.getBlubB(), is("test3#test4"));