toJson method

Implementation

core.Map<core.String, core.dynamic> toJson() {
  final business = this.business;
  final economy = this.economy;
  final first = this.first;
  final premiumEconomy = this.premiumEconomy;
  return {
    'business': ?business,
    'economy': ?economy,
    'first': ?first,
    'premiumEconomy': ?premiumEconomy,
  };
}