@Test
public void getWithAcceptHeaderAndExtraFieldsParameterOpensSseConnection() {

    final JsonFieldSelector extraFields = JsonFieldSelector.newInstance("attributes", "features/location");
    final String requestUrl = THINGS_ROUTE + "?extraFields=" + extraFields;
    executeThingsRouteTest(HttpRequest.GET(requestUrl).addHeader(acceptHeader),
            StartStreaming.getBuilder(StreamingType.EVENTS, connectionCorrelationId,
                    AuthorizationModelFactory.newAuthContext(DittoAuthorizationContextType.UNSPECIFIED,
                            Collections.emptySet()))
                    .withExtraFields(extraFields)
                    .build());
}