anchor.diff:  
   /// Parameters used for signing.
   type SignParams = {
  -    /// The assemblies to sign
  -    FilesToSign : seq<string>
       /// The dev certificate that will be used when the real certificate can not be found
       DevCertificate : SignCert
       /// The optional real certificate that will be used when it is found
  
positive.code: 
  /// Signs assemblies according to the settings specified in the parameters using signtool.exe.
  /// This will be looked up using the toolsPath parameter.
  let Sign (toolsPath : string) (parameters : SignParams) = 
      traceStartTask "SignTool" "Trying to sign the specified assemblies"
    
      let signPath = toolsPath @@ "signtool.exe"
  
negative.code:     }
  
      let signParams = {
          Certificate = Some certToUse
          DevCertificate = certToUse
          TimeStampUrl = None
      }
  
      Sign toolsPath signParams filesToSign