code: func NewBulkProcessorService(client *Client) *BulkProcessorService {
  	return &BulkProcessorService{
  		c:           client,
  		numWorkers:  1,
  		bulkActions: 1000,
  		bulkSize:    5 << 20, // 5 MB
  		backoff: NewExponentialBackoff(
  			time.Duration(200)*time.Millisecond,
  			time.Duration(10000)*time.Millisecond,
  		),
  		retryItemStatusCodes: defaultRetryItemStatusCodes,
  	}
  }
docs: // NewBulkProcessorService creates a new BulkProcessorService.