public async Task StartDelete()
{
ManagementGroup mgmtGroup = await Client.GetManagementGroups().CreateOrUpdateAsync(Recording.GenerateAssetName("mgmt-group-"), new CreateManagementGroupRequest());
var deleteOp = await mgmtGroup.StartDeleteAsync();
await deleteOp.WaitForCompletionResponseAsync();
var ex = Assert.ThrowsAsync <RequestFailedException>(async() => await mgmtGroup.GetAsync());
Assert.AreEqual(404, ex.Status);
}