Is it possible to add to class extension method via attribute?

是否有可能通过属性添加到类扩展方法吗？

youdao

By adding the EasyMock class extension, you can create mocks for classes too.

通过添加easymock类扩展，还可以为类创建mock。

youdao

The first thing this page does is include jQuery, the Class extension, and your new DbWrapper.js file.

这个页面所做的第一件事就是包含 jQuery、Class 扩展以及您的新 DbWrapper.js 文件。

youdao

And you'll be working with obviously part of this class, Deb Levy but also with Deb Levy who is the, they had teaching fellow for the extension school.

而你们将显然参与到我们的课程中来，但也可以找，他是进修学校的助教。

哈佛公开课 - 幸福课课程节选

And given that, and given the concern over the deficit, what possibly could you pass in terms of tax cuts after the election other than middle class or a temporary extension to everything?

WHITEHOUSE: Press Briefing

"Democrats agree that there should be permanent extension to the middle-class tax cuts, that there shouldn't be a permanent extension of tax cuts for millionaires and billionaires, " said White House press secretary Bill Burton.

WSJ: Democrats Gird for Tax-Relief Battle

Those middle class tax cuts would be an extension of 30 years of Reagan Republican tax policy only cutting federal income taxes on the middle class, to the point where the middle 20% of income earners by 2009 paid only a negligible portion of total federal income taxes.

FORBES: Don't Believe Obama's Ads, Romney Is A Middle Class Tax Cutter