anchor.diff:  
       extractedPackages
   
  +/// Picks the highest version of a package
  +let private pickHighestPackageVersion packages = 
  +    packages
  +    |> Seq.sortBy (fun p -> FileVersionInfo.GetVersionInfo(p).FileVersion)
  +    |> Seq.last
  +
   /// Applies binding redirects for all strong-named references to all app. and web. config files.
   let private applyBindingRedirects root extractedPackages =
       extractedPackages
  
positive.code:             match ref with
              | Reference.Library path -> Some path
              | _-> None)
      |> Seq.distinctBy (fun p -> FileInfo(p).Name)
      |> Seq.choose(fun assemblyFileName ->
          try
              let assembly = Assembly.ReflectionOnlyLoadFrom assemblyFileName
  
negative.code: open System.Collections.Generic
  open FSharp.Polyfill
  open System.Reflection
  open System.Diagnostics
  
  let private findPackagesWithContent (root,usedPackages:HashSet<_>) = 
      usedPackages
  