How can I use NARGIN/NARGOUT to determine the number of input/output arguments of an object method?

I am trying to determine the number of input/output arguments of an object's method. When the name of any object method is passed to NARGIN/NARGOUT, the returned value is always -1 regardless of the number of inputs/outputs specified in the method signature.

The following syntax returns -1 for any MethodName:

nargout('MethodName')

Answer 1

[MathWorks Support Team]

The ability to call NARGIN/NARGOUT directly on object methods is not available in MATLAB. As a workaround, specify the class and method names explicitly using the following syntax:

nargout('ClassName>ClassName.MethodName')

Answer 2

[Markus Leuthold]

It's almost five years later and this bug still exists. Any news from Mathworks on how to handle this situation in 2015?

Example:

Class C

classdef C < handle
    methods
        function r=fcn1(~)
            r='run fcn1';
        end

          function fcn2(~)
              disp('run fcn2');
          end        
      end
  end

function run

function run(f)
switch nargout(f)
    case 0
        feval(f);
    case 1
        disp(feval(f));
    case -1
        disp('bug')
end

What I expect from the following code

>> c=C;
>> run(@c.fcn1)
run fcn1
>> run(@c.fcn2)
run fcn2

Instead I get

>> c=C;
>> run(@c.fcn1)
bug
>> run(@c.fcn2)
bug

How do you recommend to workaround in case where you want to know nargout from a function handle AND evaluate a function handle?