code: func (q *TransferQueue) makeDryRunResults(ts []*Transfer) <-chan TransferResult {
  	results := make(chan TransferResult, len(ts))
  	for _, t := range ts {
  		results <- TransferResult{t, nil}
  	}
  
  	close(results)
  
  	return results
  }
docs: // makeDryRunResults returns a channel populated immediately with "successful"
  // results for all of the given transfers in "ts".