Create an instance of this classup front so it is ready when you need it without needing to consume memory.
预先创建此类的一个实例,以便随时使用,而无需占用内存。
2
All you would have to do is to be sure to keep the bookpoolHelper classup to date as you add more test case scripts and cover more application functionality.
Everything we've done with the new classup to this point should work just fine as long as any HistoryStack objects are still resident in the current document.