toJson method

Implementation

@override
Map<String, dynamic> toJson() {
  return {
    '@type': 'paymentReceipt',
    if (extra != null) '@extra': extra,
    'title': title,
    'description': description,
    'photo': photo,
    'date': date,
    'seller_bot_user_id': seller_bot_user_id,
    'payment_provider_user_id': payment_provider_user_id,
    'invoice': invoice,
    'order_info': order_info,
    'shipping_option': shipping_option,
    'credentials_title': credentials_title,
    'tip_amount': tip_amount
  };
}