@Test
public void getWithAcceptHeaderAndNamespacesParameterOpensSseConnection() {

    final Collection<String> namespaces = Lists.list("john", "frum", "tanna");
    final String requestUrl = THINGS_ROUTE + "?namespaces=" + String.join(",", namespaces);
    executeThingsRouteTest(HttpRequest.GET(requestUrl).addHeader(acceptHeader),
            StartStreaming.getBuilder(StreamingType.EVENTS, connectionCorrelationId,
                    AuthorizationModelFactory.newAuthContext(DittoAuthorizationContextType.UNSPECIFIED,
                            Collections.emptySet()))
                    .withNamespaces(namespaces)
                    .build());
}