code: func NewTrustCommand(dockerCli command.Cli) *cobra.Command {
  	cmd := &cobra.Command{
  		Use:   "trust",
  		Short: "Manage trust on Docker images",
  		Args:  cli.NoArgs,
  		RunE:  command.ShowHelp(dockerCli.Err()),
  	}
  	cmd.AddCommand(
  		newRevokeCommand(dockerCli),
  		newSignCommand(dockerCli),
  		newTrustKeyCommand(dockerCli),
  		newTrustSignerCommand(dockerCli),
  		newInspectCommand(dockerCli),
  	)
  	return cmd
  }
docs: // NewTrustCommand returns a cobra command for `trust` subcommands