private static async Task SuspendRequesterAsync()
{
var recentRequestsToPersist = new List<Uri>();
if (requester.IsStarted)
{
var pendingRequests = await requester.StopAsync();
recentRequestsToPersist = pendingRequests.Skip(pendingRequests.Count - MaximumRequestsToPersist).ToList();
}
await LocalFolderContractSerializer<List<Uri>>.SaveAsync(recentRequestsToPersist, RequestQueueFileName);
await SaveSessionState(sessionManager.GetState());
}