code: function (code) {
  
              var shippingCountries = this.$.shippingCountries;
  
              if (!shippingCountries) {
                  return null;
              }
  
              for (var i = 0; i < shippingCountries.$items.length; i++) {
                  var shippingCountry = shippingCountries.$items[i];
                  if (shippingCountry.$.code == code) {
                      return shippingCountry;
                  }
              }
  
              return null;
          }
docs: *
  this method is necessary, because ShippingCountry should be a model, but is defined by the API as entity
  
  @param code
  @returns {*}