public string GetDashboardURL()
        {
            var client = new AmazonQuickSightClient(
                accessKey,
                secretAccessKey,
                Amazon.RegionEndpoint.USEast1
                );

            try
            {
                var embed_url_result =
                    client.GetDashboardEmbedUrlAsync(new GetDashboardEmbedUrlRequest
                {
                    AwsAccountId             = accountID,
                    DashboardId              = dashboardId,
                    IdentityType             = identityType,
                    SessionLifetimeInMinutes = 60,
                    ResetDisabled            = true,
                    UndoRedoDisabled         = true
                }).Result;
                string url = embed_url_result.EmbedUrl.ToString();
                return(url);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return(null);
            }
        }