Annotations with mixins?

Hi I'm trying to make annotations that must require the user to have certain fields in a table as a requirement.

For instance, I want a table that needs to have x,y fields, or certain functions.

Here is some pseudo-code that might explain what I mean:

---@class Spinnable
---@field spin fun()

---@class Positionable
---@field x number
---@field y number
---@field setPos fun(x: number, y: number)

---@generic T : Spinnable, Positionable
---@param p1 `T`
---@return T
local function doFunction(p1) return p1 end

local entity = { x = 5 }          -- A table that is missing the other fields
local check = doFunction(entity) -- I want a warning here saying it doesn't have, `y`, `setPos()`, or `spin()`

Is this currently possible to require certain fields in a table?

首先复现 issue 中带注释的伪代码，并检查 language server 如何处理类注解、泛型和表字段检查。完成标准是：将缺少 y、setPos 或 spin 的表传递给 doFunction 时会产生诊断，而兼容的表会被接受。