in CachingProxyTests/src/CachingProxyTest.cs [530:536]
private static void AssertNoStatusHeader(HttpResponseMessage response)
{
if (response.Headers.TryGetValues(CachingProxyConstants.StatusHeader, out var headers))
{
throw new Exception($"Expected no {CachingProxyConstants.StatusHeader} header, but got: " + string.Join(", ", headers));
}
}