/// <summary>
 /// Constructs AmazonRedshiftClient with AWS Access Key ID, AWS Secret Key and an
 /// AmazonRedshiftClient Configuration object. 
 /// </summary>
 /// <param name="awsAccessKeyId">AWS Access Key ID</param>
 /// <param name="awsSecretAccessKey">AWS Secret Access Key</param>
 /// <param name="awsSessionToken">AWS Session Token</param>
 /// <param name="clientConfig">The AmazonRedshiftClient Configuration Object</param>
 public AmazonRedshiftClient(string awsAccessKeyId, string awsSecretAccessKey, string awsSessionToken, AmazonRedshiftConfig clientConfig)
     : base(awsAccessKeyId, awsSecretAccessKey, awsSessionToken, clientConfig, AuthenticationTypes.User | AuthenticationTypes.Session)
 {
 }

 /// <summary>
 /// Create a client for the Amazon Redshift service with the specified configuration
 /// </summary>
 /// <param name="awsAccessKey">The AWS Access Key associated with the account</param>
 /// <param name="awsSecretAccessKey">The AWS Secret Access Key associated with the account</param>
 /// <param name="config">Configuration options for the service like HTTP Proxy, # of connections, etc
 /// </param>
 /// <returns>An Amazon Redshift client</returns>
 /// <remarks>
 /// </remarks>
 public static AmazonRedshift CreateAmazonRedshiftClient(
     string awsAccessKey,
     string awsSecretAccessKey,
     AmazonRedshiftConfig config
     )
 {
     return new AmazonRedshiftClient(awsAccessKey, awsSecretAccessKey, config);
 }

 /// <summary>
 /// Constructs AmazonRedshiftClient with AWS Access Key ID, AWS Secret Key and an
 /// AmazonRedshiftClient Configuration object. 
 /// </summary>
 /// <param name="awsAccessKeyId">AWS Access Key ID</param>
 /// <param name="awsSecretAccessKey">AWS Secret Access Key</param>
 /// <param name="awsSessionToken">AWS Session Token</param>
 /// <param name="clientConfig">The AmazonRedshiftClient Configuration Object</param>
 public AmazonRedshiftClient(string awsAccessKeyId, string awsSecretAccessKey, string awsSessionToken, AmazonRedshiftConfig clientConfig)
     : base(awsAccessKeyId, awsSecretAccessKey, awsSessionToken, clientConfig)
 {
 }

        private OperationResult EstablishClient(AddonManifest manifest, RedshiftDeveloperOptions devOptions, out AmazonRedshiftClient client)
        {
            OperationResult result;

            bool requireCreds;
            var manifestprops = manifest.GetProperties().ToDictionary(x => x.Key, x => x.Value);
            var AccessKey = manifestprops["AWSClientKey"];
            var SecretAccessKey = manifestprops["AWSSecretKey"];
            var _RegionEndpoint = manifestprops["AWSRegionEndpoint"];

            var prop =
                manifest.Properties.First(
                    p => p.Key.Equals("requireDevCredentials", StringComparison.InvariantCultureIgnoreCase));

            if (bool.TryParse(prop.Value, out requireCreds) && requireCreds)
            {
                if (!ValidateDevCreds(devOptions))
                {
                    client = null;
                    result = new OperationResult()
                    {
                        IsSuccess = false,
                        EndUserMessage =
                            "The add on requires that developer credentials are specified but none were provided."
                    };
                    return result;
                }

            }
            AmazonRedshiftConfig config = new AmazonRedshiftConfig() { RegionEndpoint = RegionEndpoint.USEast1 };
            client = new AmazonRedshiftClient(AccessKey, SecretAccessKey, config);
            result = new OperationResult { IsSuccess = true };
            return result;
        }