/// <inheritdoc /> public string GetAccessToken() { var tenantUrl = Settings.GetSetting("Foundation.FotoWareExtensions.FotoWare.TenantUrl", string.Empty); var clientId = Settings.GetSetting("Foundation.FotoWareExtensions.FotoWare.ClientId", string.Empty); var clientSecret = Settings.GetSetting("Foundation.FotoWareExtensions.FotoWare.ClientSecret", string.Empty); if (string.IsNullOrEmpty(tenantUrl) || string.IsNullOrEmpty(clientId) || string.IsNullOrEmpty(clientSecret)) { FotoWareFieldsLog.WriteToLog("--- Authentication Service: FotoWare-Setings are incomplete or not exists ---"); return(string.Empty); } return(_fotoWareRepository.GetAccessToken(tenantUrl, clientId, clientSecret)); }