Microsoft.WindowsAzure.Commands.Utilities.CloudService.ServiceSettings.GetDefaultSubscription C# (CSharp) Method

        private static string GetDefaultSubscription(string localSubscription, string subscription)
        {
            // If user supplied value as parameter then return it
            //
            if (!string.IsNullOrEmpty(subscription))
            {
                return subscription;
            }

            // User already has value in local service settings
            //
            if (!string.IsNullOrEmpty(localSubscription))
            {
                return localSubscription;
            }

            return null;
        }