public string ToUtme() { return("8(" + string.Join("*", _variables.Where(v => v != null).Select(kvp => AnalyticsClient.EncodeUtmePart(kvp.Value.Key)).ToArray()) + ")9(" + string.Join("*", _variables.Where(v => v != null).Select(kvp => AnalyticsClient.EncodeUtmePart(kvp.Value.Value)).ToArray()) + ")11(" + string.Join("*", _variables.Where(v => v != null).Select(kvp => "1").ToArray())); }