/// <summary>
        /// Gets a collection of items describing the models trained on this Cognitive Services Account
        /// and their training status.
        /// </summary>
        /// <param name="cancellationToken">A <see cref="CancellationToken"/> controlling the request lifetime.</param>
        /// <returns>A collection of <see cref="CustomFormModelInfo"/> items.</returns>
        public virtual AsyncPageable <CustomFormModelInfo> GetCustomModelsAsync(CancellationToken cancellationToken = default)
        {
            async Task <Page <CustomFormModelInfo> > FirstPageFunc(int?pageSizeHint)
            {
                using DiagnosticScope scope = Diagnostics.CreateScope($"{nameof(FormTrainingClient)}.{nameof(GetCustomModels)}");
                scope.Start();

                try
                {
                    Response <Models.Models> response = await ServiceClient.ListCustomModelsAsync(cancellationToken).ConfigureAwait(false);

                    return(Page.FromValues(response.Value.ModelList, response.Value.NextLink, response.GetRawResponse()));
                }
                catch (Exception e)
                {
                    scope.Failed(e);
                    throw;
                }
            }

            async Task <Page <CustomFormModelInfo> > NextPageFunc(string nextLink, int?pageSizeHint)
            {
                using DiagnosticScope scope = Diagnostics.CreateScope($"{nameof(FormTrainingClient)}.{nameof(GetCustomModels)}");
                scope.Start();

                try
                {
                    Response <Models.Models> response = await ServiceClient.ListCustomModelsNextPageAsync(nextLink, cancellationToken).ConfigureAwait(false);

                    return(Page.FromValues(response.Value.ModelList, response.Value.NextLink, response.GetRawResponse()));
                }
                catch (Exception e)
                {
                    scope.Failed(e);
                    throw;
                }
            }

            return(PageableHelpers.CreateAsyncEnumerable(FirstPageFunc, NextPageFunc));
        }