Set mesh texcoord in GH

Dose someone know how to set texcoord to mesh on GH ?

If I remember correctly, this was an example.
https://www.grasshopper3d.com/forum/topics/how-to-render-mesh-colors?commentId=2985220%3AComment%3A663243

Is this example for vertex color ? not texcoord?

setTexCoord.gh (10.1 KB)

I made set texCoord python code.