# File lib/heroku/commands/domains.rb, line 3
    def list
      domains = heroku.list_domains(app)
      if domains.empty?
        display "No domain names for #{app}.#{heroku.host}"
      else
        display "Domain names for #{app}.#{heroku.host}:"
        display domains.map { |d| d[:domain] }.join("\n")
      end
    end