code: func SubcommandLogoutWithParams(params CommandParams) *subcommands.Command {
  	return &subcommands.Command{
  		Advanced:  params.Advanced,
  		UsageLine: params.Name,
  		ShortDesc: "removes cached credentials",
  		LongDesc:  "Removes cached credentials from the disk",
  		CommandRun: func() subcommands.CommandRun {
  			c := &logoutRun{}
  			c.params = &params
  			c.registerBaseFlags()
  			return c
  		},
  	}
  }
docs: // SubcommandLogoutWithParams returns subcommands.Command that can be used to purge cached
  // credentials.