Custom Light Emission in Block Model Json Files

While tinkering with the block model json files, I have noticed that one json file can access another. For example, "cube" pulls textures from "cube_all" which in turn pulls the textures from "stone".

I would like this to work with "light_emission" as well. I'd like to make a "cube_emissive" file that acts no differently than the "cube" file except that it is emissive. The difference is that I don't want to have to make a whole copy of this file every time I want to make an emissive block. Instead, I would like it to be like the "stone" file, where I only have to input the texture and the light emission level. The "cube_emissive" file would then read that data and place it into all the correct spots.

Or, I could stop being lazy and just duplicate the files every time I want to create a new emissive block. Still, I thought I'd suggest it.