code: func (actor Actor) GetServiceBrokers() ([]ServiceBroker, Warnings, error) {
  	brokers, warnings, err := actor.CloudControllerClient.GetServiceBrokers()
  	if err != nil {
  		return nil, Warnings(warnings), err
  	}
  
  	var brokersToReturn []ServiceBroker
  	for _, b := range brokers {
  		brokersToReturn = append(brokersToReturn, ServiceBroker(b))
  	}
  
  	return brokersToReturn, Warnings(warnings), nil
  }
docs: // GetServiceBrokers returns all ServiceBrokers and any warnings or errors.