Connect the signals within the work.
        The :class:`Work` is responsible for catching the important signals raised from
        its task and raise new signals when some particular condition occurs.

def connect_signals(self):
        """
        Connect the signals within the work.
        The :class:`Work` is responsible for catching the important signals raised from
        its task and raise new signals when some particular condition occurs.
        """
        for task in self:
            dispatcher.connect(self.on_ok, signal=task.S_OK, sender=task)