<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_started_message(self, job, queue):
 """ Return the message to log just befre the execution of the job """

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