-- Replace 'Class' (with capital C) with actual name of 'Class'

local class_mt = {}
local object_mt = {}
local object_idx = {}
local Class = setmetatable({}, class_mt)

-- tells lua where to look for functions called by objects/instances of 'Class'
object_mt.__index = object_idx

-- metamethods (aka operator overloading)
function class_mt.__call(class, ...)
    return class.new(...)
end
function object_mt.__eq(left, right)
    return false
end

-- example class function
function object_idx:getId()
    return self._id
end

-- constructor
function Class.new()
    local self = setmetatable({}, object_mt)
    return self
end

-- returns a handle to the class definition so other files can use this class
return Class