Overload intellise prototype issue with meta functions

[Rathoz]

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

type of b should be string

Actual Behaviour

type of b is string|nil

Reproduction steps

---@meta
local Foo = {}
---@overload fun(a: string): string
---@overload fun(a: number): table
function Foo.Bar(a)
end

local b = Foo.Bar('abc') -- type of is `string|nil`

Additional Notes

Log File

No response