codeignetor call another controller funtion in a controller : I am trying to call a function Commanfuntion in controller Return_test witch is located in Assesst_test controller.

Example :

    class Assign_test extends REST_Controller
	{
		function __construct()
		{
			parent::__construct();
		}

        function Commanfuntion()
		{
         //code
        }
    }

------------------------------------------------------------------------

    class Return_test extends REST_Controller
	{
		function __construct()
		{
			parent::__construct();
		}

        function Return()
		{
         //here i want to call Commanfuntion located in class Assesst_test
        }
    }