Unable to map Object static functions

[plasmalasgun]

unity_engine.lua

class("Object") 
    :static_method("Object Instantiate(Object, Vector3, Quaternion)")   
    :static_method("Object Instantiate(Object)")    
            :static_method("Destroy(Object, float)")

mapping any of this these will give you errors
"
Exception: @lib\ffi.lua:291: Instantiate
LuaScriptController.Awake () (at Assets/Behaviour/LuaScriptController.cs:32)
"
Any way to properly map these (necessary) functions? Thanks in advance!