And, finally, it requires two lines of boilerplate down at the bottom, so that this particular test can be run by itself from the command line.
最后,需要两行固定不变的代码,这样才能从命令行运行这个测试。
2
Lines 49 to 52 define the menu and MenuItem for the add, find, and clear actions, which can be accessed from drop-down menus when the application is deployed and run.