/// <summary>
/// Suspend the requester and preserve any unsent URIs.
/// </summary>
/// <returns>Task that completes when the requester has been suspended.</returns>
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());
}
