Hi!

I try to overload a method in point_of_sale module in a custom module.

class pos_order(osv.osv):
    _inherit = 'pos.order' 

    def onchange_partner_id(self, cr, uid, ids, part=False, context=None):
        if not part: 
            return {value: {}} 
        res = super(pos_order, self).onchange_partner_id(cr, uid, ids, part=part, context=context) 
        return res

 With this code, I have this error:

RuntimeError: maximum recursion depth exceeded while calling a Python object

Why?