private (Check, IEnumerable <IAnalyzer <IMetric> >) GetNormalCheckAndRequiredAnalyzers()
        {
            var check = new Check(CheckLevel.Error, "check")
                        .IsComplete("item")
                        .IsComplete("origin")
                        .IsContainedIn("marketplace", new[] { "EU" })
                        .IsNonNegative("sales");

            var requiredAnalyzers =
                new IAnalyzer <IMetric>[] { Initializers.Maximum("sales"), Initializers.Minimum("sales") };

            return(check, requiredAnalyzers);
        }