# File lib/heroku/commands/logs.rb, line 39
    def drains
      if args.empty?
        puts heroku.list_drains(app)
        return
      end

      case args.shift
        when "add"
          url = args.shift
          puts heroku.add_drain(app, url)
          return
        when "remove"
          url = args.shift
          puts heroku.remove_drain(app, url)
          return
        when "clear"
          puts heroku.clear_drains(app)
          return
      end
      raise(CommandFailed, "usage: heroku logs:drains <add | remove | clear>")
    end