Why does MATLAB throw a “too many output arguments” error when I overload subsref (subscripted reference)?

Question

As a toy example, I have a class that simply wraps a vector or matrix in an object and includes a timestamp of when it was created. I\'m trying to overload

Answer 1

This solution seems to work in 2014b (but not entirely certain why)

classdef TestClass < handle
    methods

        function n = numel(~,varargin)
            n = 1;
        end

        function varargout = subsref(input,S)
            varargout = builtin('subsref',input,S);
        end

        function out = twoOutputs(~)
            out = {}; out{1} = 2; out{2} = 3; 
        end
    end
end

Then via the command window

>> testClass = TestClass();
>> [a,b] = testClass.twoOutouts()
a =

     2

b =

     3