def getTaskTypes(self):
        """ Return the current list of task types
        """
        types = [
            ('Calibration', safe_unicode(_('Calibration')).encode('utf-8')),
            ('Enhancement', safe_unicode(_('Enhancement')).encode('utf-8')),
            ('Preventive', safe_unicode(_('Preventive')).encode('utf-8')),
            ('Repair', safe_unicode(_('Repair')).encode('utf-8')),
            ('Validation', safe_unicode(_('Validation')).encode('utf-8')),
        ]

        return DisplayList(types)
Return the current list of task types