@Test
public void filterValueWithoutDittoInternalRequests() {

    final DittoHeaderDefinition headerDefinition = DittoHeaderDefinition.REQUESTED_ACKS;
    final List<AcknowledgementRequest> acknowledgementRequests = Lists.list(
            AcknowledgementRequest.of(AcknowledgementLabel.of("foo")),
            AcknowledgementRequest.of(AcknowledgementLabel.of("bar")));
    final JsonArray acknowledgementRequestsJsonArray = acknowledgementRequests.stream()
            .map(AcknowledgementRequest::toString)
            .map(JsonValue::of)
            .collect(JsonCollectors.valuesToArray());
    final String value = acknowledgementRequestsJsonArray.toString();
    final DittoAckRequestsFilter underTest = DittoAckRequestsFilter.getInstance();
    assertThat(underTest.apply(headerDefinition.getKey(), value)).isEqualTo(value);
}