docs: def present(name, provider):
      '''
      Ensure the RackSpace queue exists.
  
      name
          Name of the Rackspace queue.
  
      provider
          Salt Cloud Provider
      '''
      ret = {'name': name, 'result': True, 'comment': '', 'changes': {}}
  
      is_present = list(__salt__['cloud.action']('queues_exists', provider=provider, name=name)[provider].values())[0]
  
      if not is_present:
          if __opts__['test']:
              msg = 'Rackspace queue {0} is set to be created.'.format(name)
              ret['comment'] = msg
              ret['result'] = None
              return ret
          created = __salt__['cloud.action']('queues_create', provider=provider, name=name)
          if created:
              queue = __salt__['cloud.action']('queues_show', provider=provider, name=name)
              ret['changes']['old'] = {}
              ret['changes']['new'] = {'queue': queue}
          else:
              ret['result'] = False
              ret['comment'] = 'Failed to create {0} Rackspace queue.'.format(name)
              return ret
      else:
          ret['comment'] = '{0} present.'.format(name)
  
      return ret