public static void Has(this FakeKeyValueStore instance, ServerCountSample sample)
        {
            var x = instance.ServerCountSamples();

            x.Samples = x.Samples.Append(sample).ToArray();
            Has(instance, x);
        }
 public static IEnumerable <ServerCountSample> Samples(this FakeKeyValueStore instance) =>
 instance.ServerCountSamples().Samples;
 public static void Has(this FakeKeyValueStore instance, ServerCountSamples samples) =>
 instance.ServerCountSamples(samples);