<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def add_output_opt(self, opt, out):
 """ Add an option that determines an output """

        self.add_opt(opt, out._dax_repr())
        self._add_output(out)