function CreateClass()
    local newClass = {}
    newClass.__index = newClass

    setmetatable(newClass, {
        __call = function (cls, ...)
          return cls.new(...)
        end,
    })
    return newClass
end

ExampleClass = CreateClass()

function ExampleClass.new()
    local self = setmetatable({}, ExampleClass)
    self.exampleInstanceVarible = "Hello World"
    return self
end

function ExampleClass:HelloWorld()
    print(self.exampleInstanceVarible)
end

local test = ExampleClass()
test:HelloWorld()