下面我有一些我在Microsoft-Windows-Workflow-4-0-cookbook中练习的练习的代码片段。我不理解lambda语句。在以下上下文中是什么aec(aec => testClass)。工具提示表明这是一个活动上下文。它的目的是什么?
# Use Apache for requests to http://example.com/
# but use Node.js for requests to http://example.com/node/
<VirtualHost *:80>
ServerName example.com
DocumentRoot /var/www/example/
<Location /node>
ProxyPass http://127.0.0.1:8124/
ProxyPassReverse http://127.0.0.1:8124/
</Location>
</VirtualHost>