<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def job_success_message(self, job, queue, job_result):
 """ Return the message to log when a job is successful """

        return '[%s|%s|%s] success, in %s' % (queue._cached_name, job.pk.get(),
                                           job._cached_identifier, job.duration)