toJson method

Implementation

core.Map<core.String, core.dynamic> toJson() {
  final country = this.country;
  final price = this.price;
  final service = this.service;
  final surface = this.surface;
  return {
    'country': ?country,
    'price': ?price,
    'service': ?service,
    'surface': ?surface,
  };
}