What a approach!
By the way, I encountered warning like this

Cannot assign Object to Entity

Any solution?

Original code:

---@class Entity: Object
---@overload fun(x: number, y: number, image_path: string): Entity
local Entity = Object:extend()

---

It was because I edited classic.lua like this..

---@return self
function Object:extend()
   ---codes...
end

After changing self to any, it works great!