// Helper to pull out the calculated rule
        private static LoggerFilterRule SelectAppInsightsRule(LoggerFilterOptions options, string category)
        {
            var providerType = typeof(ApplicationInsightsLoggerProvider);

            var ruleSelector = new LoggerRuleSelector();

            ruleSelector.Select(options, providerType, category, out LogLevel? minLevel, out Func <string, string, LogLevel, bool> filter);

            return(new LoggerFilterRule(providerType.FullName, category, minLevel, filter));
        }