/// <summary>
            /// Unlinks the external identity from the customer account.
            /// </summary>
            /// <param name="externalIdentityId">The external identity identifier.</param>
            /// <param name="externalIdentityIssuer">The external identity issuer.</param>
            /// <param name="customerId">The customer identifier.</param>
            public void UnlinkExternalIdentityFromCustomer(string externalIdentityId, string externalIdentityIssuer, string customerId)
            {
                CustomerDataManager dataManager = this.GetDataManagerInstance();

                dataManager.UnlinkExternalIdentityFromCustomer(externalIdentityId, externalIdentityIssuer, customerId);
            }