cannot recognize emmy field

I have defined an emmy class role:

---@class role
---@field equipment_mgr equipment_mgr

an emmy class equipment_mgr:

---@class equipment_mgr
local data = {
        role = role, ---@type role
        equipment = orm_equipment, ---@type table<integer, db.Equipment>
}

then add some method to equipment_mgr:

---@type equipment_mgr
local mt = {}
mt.__index = mt

---@return db.Equipment
function mt:get_equipment(uid)
    return self.equipment[uid]
end

Lua Diagnostics cannot recognize the method get_equipment:

while other extension can

首先，在 Lua Diagnostics 中复现所示的 Lua 类、字段、元表和 get_equipment 方法。将其对该方法的识别与提到的另一个扩展进行比较；当 Lua Diagnostics 能够在 equipment_mgr 上识别 get_equipment 且不再出现所报告的诊断时，即表示完成。