@Test
public void modifyPolicyIdToAdaptable() {

    final TopicPath topicPath = topicPath(TopicPath.Action.MODIFY);
    final JsonPointer path = JsonPointer.of("/policyId");
    final Adaptable expected = Adaptable.newBuilder(topicPath)
            .withPayload(Payload.newBuilder(path)
                    .withValue(JsonValue.of(TestConstants.Policies.POLICY_ID))
                    .build())
            .withHeaders(TestConstants.HEADERS_V_2)
            .build();
    final ModifyPolicyId modifyPolicyId =
            ModifyPolicyId.of(TestConstants.THING_ID, TestConstants.Policies.POLICY_ID,
                    TestConstants.DITTO_HEADERS_V_2);
    final Adaptable actual = underTest.toAdaptable(modifyPolicyId, channel);
    assertWithExternalHeadersThat(actual).isEqualTo(expected);
}