public async Task StartExportTemplate()
{
SubscriptionResource subscription = await Client.GetDefaultSubscriptionAsync().ConfigureAwait(false);
var rgOp = await subscription.GetResourceGroups().CreateOrUpdateAsync(WaitUntil.Completed, Recording.GenerateAssetName("testrg"), new ResourceGroupData(AzureLocation.WestUS2));
ResourceGroupResource rg = rgOp.Value;
var parameters = new ExportTemplate();
parameters.Resources.Add("*");
var expOp = await rg.ExportTemplateAsync(WaitUntil.Started, parameters);
await expOp.WaitForCompletionAsync();
Assert.ThrowsAsync <ArgumentNullException>(async() =>
{
var expOp = await rg.ExportTemplateAsync(WaitUntil.Started, null);
_ = await expOp.WaitForCompletionAsync();
});
}