text: const Backbone = require('backbone');
  
  const model = Backbone.Model.extend({
      idAttribute: 'id',
  
      defaults: function () {
          return {
              id:              undefined,
              created_on:      null,
              modified_on:     null,
              incoming_port:   null,
              forward_ip:      null,
              forwarding_port: null,
              tcp_forwarding:  true,
              udp_forwarding:  false,
              enabled:         true,
              meta:            {},
              // The following are expansions:
              owner:           null
          };
      }
  });
  
  module.exports = {
      Model:      model,
      Collection: Backbone.Collection.extend({
          model: model
      })
  };
  