src/js/vatcountry.js
function VATCountry(name, code, countryCode, periods, date) {
  this._name = name;
  this._code = code;
  this._countryCode = countryCode;
  this._periods = periods;

  this.setDate(date);
}
function VATCountry(name, code, countryCode, periods, date) {
  this._name = name;
  this._code = code;
  this._countryCode = countryCode;
  this._periods = periods;

  this.setDate(date);
}
VATCountry

@param {string} name
@param {string} code
@param {string} countryCode
@param {VATPeriod[]} periods
@param {Date} [date]