code: def _GetPurgeMessage(most_recent_step, most_recent_wall_time, event_step,
                       event_wall_time, num_expired_scalars, num_expired_histos,
                       num_expired_comp_histos, num_expired_images,
                       num_expired_audio):
    
    return ('Detected out of order event.step likely caused by '
            'a TensorFlow restart. Purging expired events from Tensorboard'
            ' display between the previous step: {} (timestamp: {}) and '
            'current step: {} (timestamp: {}). Removing {} scalars, {} '
            'histograms, {} compressed histograms, {} images, '
            'and {} audio.').format(most_recent_step, most_recent_wall_time,
                                    event_step, event_wall_time,
                                    num_expired_scalars, num_expired_histos,
                                    num_expired_comp_histos, num_expired_images,
                                    num_expired_audio)
docs: Return the string message associated with TensorBoard purges.