private static Dictionary <string, bool?> GetValuesAsBools(TelemetryEvent item)
        {
            var values = new Dictionary <string, bool?>(StringComparer.OrdinalIgnoreCase);
            var e      = item.GetEnumerator();

            while (e.MoveNext())
            {
                values.Add(e.Current.Key, e.Current.Value as bool?);
            }

            return(values);
        }