Applying Map texture

Hello, thank you for sharing the nice framework!

I want to apply my map texture file (.jpg) to the map. As you know, in the Isaac gym, the existing map is colored simply gray (or checkboard pattern).
Is there any way to do this?

The only information I can find is the
‘texture_handle = gym.create_texture_from_file(sim, texture_filename)’ from graphics.rst.txt,
but this seems to be about an object instance, not a map environment.
So I have no idea what I have to do.