<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def release(self, priority=None, delay=0):
 """Release this job back into the ready queue."""

        if self.reserved:
            self.conn.release(self.jid, priority or self._priority(), delay)
            self.reserved = False