# File lib/blimpy/fleet.rb, line 55
    def resume(instances)
      boxes = []
      print '>> Resuming: '
      instances.each do |instance_id, instance_data|
        print "#{instance_data['name']},"
        box = Blimpy::Box.from_instance_id(instance_id, instance_data)
        box.resume
        boxes << box
      end

      boxes.each do |box|
        box.wait_for_state('running') { print '.' }
      end
      puts
    end