What does converting textures from materials to json mean and how its done?

So the first gen Kashira updated this morning and i saw "- Converted materials to json (requires cache clear before use)", i just wondered what does that do to improve the mod/ how its done.

 

before it used materials.cs
basically it jus brings it up to today's standards according to the materials

 

Json is the new file format that replaced cs for vehicle materials a while ago. While cs is still technically supported, it’s just a good idea to update to the latest systems to ensure compatibility in future versions of the game. So there isn’t much of an improvement right now from the user’s standpoint, but json is internally a better system for vehicle materials.

 

How do I change cs to json? What do I have to add/remove?

 

ok, interesting, good luck on the Kashiras in the future BTW!