Twitter bootstrap twitterBootstrap在play framework 2.4中不被识别？

我正在使用Play framework 2.4。我尝试使用引导引导在

在我的模板中，我使用了导入语句：

@import helper.twitterBootstrap._

但我有一个编译错误：

object twitterBootstrap is not a member of package views.html.helper

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我遗漏了什么吗？

可能已经按此处所述删除了：

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对于那些使用play 2.4的用户，可能已经删除了play 2.4，如下所述：

对于使用play 2.4的用户

The in-built Twitter Bootstrap field constructor has been deprecated, and will be removed in a future version of Play.

There are a few reasons for this, one is that we have found that Bootstrap changes too drastically between versions and too frequently, such that any in-built support provided by Play quickly becomes stale and incompatible with the current Bootstrap version.