getting Touch coordinates and converting "Touch.touches[]" from C2 to C3

Hello. I'm trying to convert the C2 addon to C3, but I'm faced with the fact that I can't get the x, y coordinates of the Touch plugin in C3. Can anyone tell me?

More specifically, I can't figure out how this is "touch.touches[index].x" or "touch.touches.length" from C2, write to C3?

There are clear warnings in the documentation: undocumented internal details should not be relied upon and won't be supported. Don't do that! It causes appalling compatibility problems. Find another way to design it.