关于泛型函数

Nobody has claimed this yet.

### How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

### Which OS are you using?

Windows

### What is the issue affecting?

Type Checking

### Expected Behaviour

使用---@generic T:frame ---@return T
获取到的返回类型好像没办法继承到frame?
fun(`T`):T 这种写法好像不生效，有什么类似的写法吗

### Actual Behaviour


fun里好像没有办法写泛型

### Reproduction steps

---@generic T:frame
---@overload fun(name:`T`):fun(params:table):frame.T
local newframe = setmetatable({},{
__index = frame,
__call = function(self,name)
local class = rawget(self,name)
if class and getmetatable(class) then
return function(param)
return frame(class,param)
end
end
end,
})

---@type frame.button
local a = newframe 'button' {

}

### Additional Notes

有什么格式支持这种返回值吗

### Log File

_No response_

Start with the generic annotation and setmetatable reproduction in the issue, then trace how the type checker handles `---@generic`, `---@overload`, and `fun` return types. Done means either the existing annotation format correctly infers `frame.button` or the supported syntax and its limitations are clearly documented.

Written by the indexing model from the issue text.