The current status of the job: * `waiting`: The service is preparing the job for processing.
The service returns this status when the job is initially created or when it is waiting for
capacity to process the job. The job remains in this state until the service has the capacity
to begin processing it. * `processing`: The service is actively processing the job. *
`completed`: The service has finished processing the job. If the job specified a callback URL
and the event `recognitions.completed_with_results`, the service sent the results with the
callback notification. Otherwise, you must retrieve the results by checking the individual job.
* `failed`: The job failed.