/// <summary>
        /// Loads the device credentials (if they exist). If they don't
        /// </summary>
        /// <param name="applicationId">Application id</param>
        /// <param name="issuerUri">URL for the current token issuer</param>
        /// <remarks>
        /// The issuerUri can be retrieved from the IServiceConfiguration interface's CurrentIssuer property.
        /// </remarks>
        public static ClientCredentials LoadOrRegisterDevice(Guid applicationId, Uri issuerUri)
        {
            var clientCredentials = DeviceIdManager.LoadDeviceCredentials(issuerUri) ?? DeviceIdManager.RegisterDevice(applicationId, issuerUri);

            return(clientCredentials);
        }