def max_job_id
      job = Job.new(transmit(PROBE_TRANSMISSION))
      job.delete
      update_climbed_job_ids_from_max_id(job.id)
      return job.id
    end
def max_job_id
      job = Job.new(transmit(PROBE_TRANSMISSION))
      job.delete
      update_climbed_job_ids_from_max_id(job.id)
      return job.id
    end
Initializes a new Connection to the beanstalk +address+ provided and
 configures the Connection to only use the configured test_tube for
 all transmissions.
 Optionally yields the instance if a block is given. The instance is yielded
 prior to test_tube configuration to allow the test_tube to be configured.
 Determintes the max job ID of the connection by inserting a job into the test tube
 and immediately deleting it. Before returning the max ID, the max ID is used to
 update the max_climbed_job_id (if sequentual) and possibly invalidate the job cache.
 The cache will be invalidated if the max ID is less than any known IDs since
 new job IDs should always increment unless there's been a change in server state.