How Would You Tween the Rotation of a Model?

I've been doing some tweening already with individual parts and stuff, but how would you use tweening to rotate a model (with its primary part I presume)?

Here's the format I've been using for my tweening so far.

local TweenService = game:GetService("TweenService")
local part = script.Parent

local openGoal = {}
openGoal.Size = part.Size + Vector3.new(5,5,5)
openGoal.Position = part.Position + Vector3.new(0, 0, 10)
openGoal.Color = Color3.fromRGB(0,0,0)

local tweenInfo = TweenInfo.new(4)

local open = TweenService:Create(part, tweenInfo, openGoal)

open:Play()