public void HttpMessageHandlerOptions_DoesNotMatch(HttpMessageHandlerOptions options, ConfiguredHttpMessageHandler configuredHandler) =>
 Assert.Throws <InvalidOperationException>(() => options.CheckItMatches(configuredHandler));
 public void HttpMessageHandlerOptions_Matches(HttpMessageHandlerOptions options, ConfiguredHttpMessageHandler configuredHandler) =>
 Assert.Same(configuredHandler, options.CheckItMatches(configuredHandler));