# File lib/heroku/helpers.rb, line 142
    def format_bytes(amount)
      amount = amount.to_i
      return '(empty)' if amount == 0
      return amount if amount < @@kb
      return "#{(amount / @@kb).round}k" if amount < @@mb
      return "#{(amount / @@mb).round}M" if amount < @@gb
      return "#{(amount / @@gb).round}G"
    end