How to pass an Object function as a parameter?

[Sckriptor]

So, we all know how to pass a function as a parameter in another function. Looks like this:

function foo()
   return 1
end
function bar(functionRef)
   print(functionRef())
end
bar(foo)
--this will print 1

The trick is to just not CALL the function by instead not using parentheses. Simple enough, but what about functions that are part of an object?
Ie this:

--this script makes a simple object with a Foo function inside.
--Its designed to print Index stored when Foo is called
local Module={}
Module.__index=Module

function Module:Foo()
  print(self.Index)
end

function Module.Init(Index)
  local Object ={}
  setmetatable(Object,Module)
  Object.Index=Index
  return Object
end
return Module

--This script is inside inheriter
local Module = require(Module).Init(1)
Module:Foo() --this will print 1, as expected.

function Bar(functionRef)
  functionRef()
end

Module:Foo --this is unusable as a parameter in a function
Bar(Module:Foo) --this is unacceptable. :(

As you can see, I just want to know how to pass an object function as a parameter in a different function. This could be extremely help for binding/connecting events too. Any help is appreciated

EDIT:
I tried this: Module.Foo(Module) but since the function is being call immediately, it still isnt a parameter. Very sad

[HugeCoolboy2007 (omega)]

Use a dot .

--This script is inside inheriter
local Module = require(Module).Init(1)
Module:Foo() --this will print 1, as expected.

function Bar(functionRef)
  functionRef(Module) -- equivalent of Module:Foo()
end

Bar(Module.Foo)

[Sckriptor]

This would work if Bar knows or has access to the object. In my case, it does not. and will not, since their are multiple objects

[HugeCoolboy2007 (omega)]

You can pass the object as a parameter:

local Module = require(Module).Init(1)
Module:Foo()

function Bar(functionRef, ...)
  functionRef(...) -- Passes the object and any additional parameters
  -- equivalent of Object:Method(...)
end

Bar(Module.Foo, Module)

[Sckriptor]

Sorry, but it looks like the easiest way to accomplish what i wanted was an anon function

local Module = require(Module).Init(1)
Module:Foo() --this will print 1, as expected.

function Bar(functionRef)
  functionRef()
end

Module:Foo --this is unusable as a parameter in a function
Bar(function() Module:Foo() end)