code: func RunPrune(dockerCli command.Cli, all bool, filter opts.FilterOpt) (uint64, string, error) {
  	output, err := runPrune(dockerCli, pruneOptions{force: true, filter: filter})
  	return 0, output, err
  }
docs: // RunPrune calls the Network Prune API
  // This returns the amount of space reclaimed and a detailed output string