/// <summary>
            /// Save customer account activation request to channel DB.
            /// </summary>
            /// <param name="email">E-mail address.</param>
            /// <param name="activationToken">Activation token (a GUID).</param>
            /// <returns>Result for linking external identity to an existing customer.</returns>
            public LinkToExistingCustomerResult FinalizeLinkToExistingCustomer(string email, string activationToken)
            {
                CustomerDataManager dataManager = this.GetDataManagerInstance();

                return(dataManager.FinalizeLinkToExistingCustomer(email, activationToken));
            }