When creating a NuGet package, can I modify existing source code files?

I'm trying to create a series of NuGet packages for local use within my organization.

I'm aware I can create source-code transformation files (i.e. MyModel.cs.pp) to help with adding new source code files, i.e.:

namespace $rootnamespace$.Models {
    public struct CategoryInfo {
        public string categoryid;
        public string description;
    }
}

But w开发者_如何学Gohat if I want to modify an existing source-code file? Is there any way to do this? Perhaps using PowerShell?

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You can do this using CodeModel http://msdn.microsoft.com/en-us/library/envdte.codemodel.aspx.