/// <summary>
        /// Constructor of <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.Internal.DeliveryClient"/> class.
        /// </summary>
        /// <param name="policyFactory">An instance of IDeliveryPolicyFactory. <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.Internal.IDeliveryPolicyFactory"/></param>
        /// <param name="maConfig">Mobile Analytics Manager configuration. <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.MobileAnalyticsManagerConfig"/></param>
        /// <param name="clientContext">An instance of ClientContext. <see cref="Amazon.Runtime.Internal.ClientContext"/></param>
        /// <param name="credentials">An instance of Credentials. <see cref="Amazon.Runtime.AWSCredentials"/></param>
        /// <param name="regionEndPoint">Region endpoint. <see cref="Amazon.RegionEndpoint"/></param>
        /// <param name="maManager">Mobile Analytics Manager instance. <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.MobileAnalyticsManager"/></param>
        public DeliveryClient(IDeliveryPolicyFactory policyFactory, MobileAnalyticsManagerConfig maConfig, ClientContext clientContext, AWSCredentials credentials, RegionEndpoint regionEndPoint, MobileAnalyticsManager maManager)
        {
            _policyFactory = policyFactory;
            _deliveryPolicies = new List<IDeliveryPolicy>();
            _deliveryPolicies.Add(_policyFactory.NewConnectivityPolicy());

            _clientContext = clientContext;
            _appID = clientContext.AppID;
            _maConfig = maConfig;
            _eventStore = new SQLiteEventStore(maConfig);
            _maManager = maManager;

			
            if (null == credentials && null == regionEndPoint)
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient();
            }
            else if (null == credentials)
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient(regionEndPoint);
            }
            else if (null == regionEndPoint)
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient(credentials);
            }
            else
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient(credentials, regionEndPoint);
            }
        }
        /// <summary>
        /// Constructor of <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.Internal.DeliveryClient"/> class.
        /// </summary>
        /// <param name="policyFactory">An instance of IDeliveryPolicyFactory. <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.Internal.IDeliveryPolicyFactory"/></param>
        /// <param name="maConfig">Mobile Analytics Manager configuration. <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.MobileAnalyticsManagerConfig"/></param>
        /// <param name="clientContext">An instance of ClientContext. <see cref="Amazon.Runtime.Internal.ClientContext"/></param>
        /// <param name="credentials">An instance of Credentials. <see cref="Amazon.Runtime.AWSCredentials"/></param>
        /// <param name="regionEndPoint">Region endpoint. <see cref="Amazon.RegionEndpoint"/></param>
        /// <param name="maManager">Mobile Analytics Manager instance. <see cref="Amazon.MobileAnalytics.MobileAnalyticsManager.MobileAnalyticsManager"/></param>
        public DeliveryClient(IDeliveryPolicyFactory policyFactory, MobileAnalyticsManagerConfig maConfig, ClientContext clientContext, AWSCredentials credentials, RegionEndpoint regionEndPoint, MobileAnalyticsManager maManager)
        {
            _policyFactory    = policyFactory;
            _deliveryPolicies = new List <IDeliveryPolicy>();
            _deliveryPolicies.Add(_policyFactory.NewConnectivityPolicy());

            _clientContext = clientContext;
            _appID         = clientContext.AppID;
            _maConfig      = maConfig;
            _eventStore    = new SQLiteEventStore(maConfig);
            _maManager     = maManager;


            if (null == credentials && null == regionEndPoint)
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient();
            }
            else if (null == credentials)
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient(regionEndPoint);
            }
            else if (null == regionEndPoint)
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient(credentials);
            }
            else
            {
                _mobileAnalyticsLowLevelClient = new AmazonMobileAnalyticsClient(credentials, regionEndPoint);
            }
        }