Where can I find the source for System.Web.Optimization?

I am trying to figure out why when I create a scriptbundle that is referencing files that are in an IIS VirtualDirectory under my main site's application folder, why it won't output anything.

I found this post:

Why does ResolveBundleUrl not work for custom folders? (MVC Beta 4)

but it no longer seems valid with the latest beta build of System.Web.Optimization.

Solution

System.Web.Optimization is still in the process of being moved to open source, so you can't find the official sources currently.

Package is not found in the following primary source
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