public async virtual Task <ArmOperation <SiteSlot> > CreateOrUpdateAsync(bool waitForCompletion, string slot, WebSiteData siteEnvelope, CancellationToken cancellationToken = default)
        {
            Argument.AssertNotNullOrEmpty(slot, nameof(slot));
            Argument.AssertNotNull(siteEnvelope, nameof(siteEnvelope));

            using var scope = _siteSlotWebAppsClientDiagnostics.CreateScope("SiteSlotCollection.CreateOrUpdate");
            scope.Start();
            try
            {
                var response = await _siteSlotWebAppsRestClient.CreateOrUpdateSlotAsync(Id.SubscriptionId, Id.ResourceGroupName, Id.Name, slot, siteEnvelope, cancellationToken).ConfigureAwait(false);

                var operation = new AppServiceArmOperation <SiteSlot>(new SiteSlotOperationSource(Client), _siteSlotWebAppsClientDiagnostics, Pipeline, _siteSlotWebAppsRestClient.CreateCreateOrUpdateSlotRequest(Id.SubscriptionId, Id.ResourceGroupName, Id.Name, slot, siteEnvelope).Request, response, OperationFinalStateVia.Location);
                if (waitForCompletion)
                {
                    await operation.WaitForCompletionAsync(cancellationToken).ConfigureAwait(false);
                }
                return(operation);
            }
            catch (Exception e)
            {
                scope.Failed(e);
                throw;
            }
        }