<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def cancel(self):
 """Cancel a connector from completing."""

        if self.started and not self.connected and not self.timedout:
            self.connect_watcher.stop()
            self.timeout_watcher.stop()