old_contents: import DS from 'ember-data';
  
  export default DS.Model.extend({
    currencyName: DS.attr('string', {
      defaultValue () { return 'USD'; }
    }),
    currencySymbol: DS.attr('string', {
      defaultValue () { return '$'; }
    }),
    userName: DS.attr('string', {
      defaultValue () { return 'Guest'; }
    })
  });
  
new_contents: import DS from 'ember-data';
  
  export default DS.Model.extend({
    currencyName: DS.attr('string', {
      defaultValue () { return 'USD'; }
    }),
    currencySymbol: DS.attr('string', {
      defaultValue () { return '$'; }
    }),
    userName: DS.attr('string', {
      defaultValue () { return 'Guest'; }
    }),
    monthlyLimit: DS.attr('number', {
      defaultValue () { return 1000; }
    })
  });
  
subject: Add monthlyLimit value for user-settings