Where can we find the Specular/Base shader pass script ?

Hi ! I downloaded the pack with the unity build-in shaders scripts, planning to add some tweakable values on existing shaders (by creating new ones of course).

But, here is my problem: a lot of the build in shaders use: " UsePass "Specular/BASE" ", I can find the Specular shader in the Unity Editor, but it is not in the package available on Unity website.

I would like to change it a bit, so I need to have access to the script of this Specular shader, do someone know where I can find it ?

Thanks !

It's the "BASE" pass inside the file called "Normal-Glossy.shader". If you open that file, you'll notice the first line says:

Shader "Specular" {

So it's just a case of the file having a slightly unintuitive name (glossy rather than specular).