@Test
public void modifyThingToAdaptable() {

    final TopicPath topicPath = topicPath(TopicPath.Action.MODIFY);
    final JsonPointer path = JsonPointer.empty();
    final Adaptable expected = Adaptable.newBuilder(topicPath)
            .withPayload(Payload.newBuilder(path)
                    .withValue(TestConstants.THING.toJson(FieldType.regularOrSpecial()))
                    .build())
            .withHeaders(TestConstants.HEADERS_V_2)
            .build();
    final ModifyThing modifyThing =
            ModifyThing.of(TestConstants.THING_ID, TestConstants.THING, null, null,
                    TestConstants.HEADERS_V_2_NO_CONTENT_TYPE);
    final Adaptable actual = underTest.toAdaptable(modifyThing, channel);
    assertWithExternalHeadersThat(actual).isEqualTo(expected);
}