public async Task ManageCustomModelsAsync()
        {
            string endpoint        = TestEnvironment.Endpoint;
            string apiKey          = TestEnvironment.ApiKey;
            string trainingFileUrl = TestEnvironment.BlobContainerSasUrl;

            FormTrainingClient client = new FormTrainingClient(new Uri(endpoint), new AzureKeyCredential(apiKey));

            // Check number of models in the FormRecognizer account, and the maximum number of models that can be stored.
            AccountProperties accountProperties = await client.GetAccountPropertiesAsync();

            Console.WriteLine($"Account has {accountProperties.CustomModelCount} models.");
            Console.WriteLine($"It can have at most {accountProperties.CustomModelLimit} models.");

            // List the models currently stored in the account.
            AsyncPageable <CustomFormModelInfo> models = client.GetModelInfosAsync();

            await foreach (CustomFormModelInfo modelInfo in models)
            {
                Console.WriteLine($"Custom Model Info:");
                Console.WriteLine($"    Model Id: {modelInfo.ModelId}");
                Console.WriteLine($"    Model Status: {modelInfo.Status}");
                Console.WriteLine($"    Created On: {modelInfo.CreatedOn}");
                Console.WriteLine($"    Last Modified: {modelInfo.LastModified}");
            }

            // Create a new model to store in the account
            CustomFormModel model = await client.StartTrainingAsync(new Uri(trainingFileUrl)).WaitForCompletionAsync();

            // Get the model that was just created
            CustomFormModel modelCopy = await client.GetCustomModelAsync(model.ModelId);

            Console.WriteLine($"Custom Model {modelCopy.ModelId} recognizes the following form types:");

            foreach (CustomFormSubModel subModel in modelCopy.Models)
            {
                Console.WriteLine($"SubModel Form Type: {subModel.FormType}");
                foreach (CustomFormModelField field in subModel.Fields.Values)
                {
                    Console.Write($"    FieldName: {field.Name}");
                    if (field.Label != null)
                    {
                        Console.Write($", FieldLabel: {field.Label}");
                    }
                    Console.WriteLine("");
                }
            }

            // Delete the model from the account.
            await client.DeleteModelAsync(model.ModelId);
        }