public async Task DisplaySample()
{
var dm = new DocumentManager();
//ProcessDocuments在一个单独的任务中处理队列的文档，能从外部访问的唯一方法是Start()
Task processDocuments = ProcessDocuments.Start(dm);
for (int i = 0; i < 10; i++)
{
var doc = new Document($"Doc {i.ToString()}", "content");
dm.AddDocument(doc);
Console.WriteLine($"Added document {doc.Title}");
await Task.Delay(new Random().Next(20));
}
await processDocuments;
}
