in CachingProxyTests/src/CachingProxyTest.cs [273:279]
public async Task Head_With_Missing_File()
{
await AssertHeadResponse("/repo1.maven.org/maven2/notfound.txt", HttpStatusCode.NotFound,
message => AssertStatusHeader(message, CachingProxyStatus.NEGATIVE_MISS));
await AssertHeadResponse("/repo1.maven.org/maven2/notfound.txt", HttpStatusCode.NotFound,
message => AssertStatusHeader(message, CachingProxyStatus.NEGATIVE_HIT));
}