You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: hoiio_service.rb
    path of file: ./repos/errbit/app/models/notification_services
    
    the code of the file until where you have to start completion: class NotificationServices::HoiioService < NotificationService
    
  def create_notification(problem)
    # build the hoi client
    sms = Hoi::SMS.new(api_token, subdomain)

    # send sms
    room_id.split(',').each do |number|
      sms.send dest: number, msg: "#{Errbit::Config.protocol}://#{Errbit::Config.host}/apps/#{problem.app.id} #{notification_description problem}"
    end
  end