@Test
public void testPiggyback() {

    final RetrieveThing retrieveThing = RetrieveThing.of("thing:id", DittoHeaders.empty());
    final ExecutePiggybackCommand body =
            ExecutePiggybackCommand.of("things", "1", retrieveThing.toJson(), DittoHeaders.empty());
    final RequestEntity requestEntity = HttpEntities.create(ContentTypes.APPLICATION_JSON, body.toJsonString());
    final TestRouteResult result = underTest.run(HttpRequest.POST("/devops/piggyback")
            .withEntity(requestEntity));
    result.assertStatusCode(StatusCodes.OK);
}