st: pointing to a class member function (likelihood) with optimize() in mata

[Pierre-Carl Michaud <pcmichaud@gmail.com>]

In mata, I am trying to write a general class to estimate models. I  
have had no problem with optimize outside of a class. I want now to  
call optimize in the class and I have a problem with the line
  optimize_init_evaluator(s, &func())
The likelihood func() is a member function (method) in the class and  
as such referring to &func() does not find it. I've tried  
&classname::func() and no luck either. &this.func() does refer to  
something but then I get
  modelbase::func():  3001  expected 6 arguments but received 1
same error message if I define func() in the class definition as a  
static member function.
Anyone has an idea of how to point to a class function so that  
optimize() finds it and its arguments?

Cheers,
Pierre-Carl.
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/