toTotalPay method

Implementation

String toTotalPay() {
  return """
  {application_id: '${getApplicationId()}',
   pg: '$pg',
   order_name: '${orderName?.queryReplace()}',
   price: $price,
   tax_free: $taxFree,
   order_id: '${orderId.queryReplace()}',
   subscription_id: '$subscriptionId',
   authentication_id: '$authenticationId',
   wallet_id: '$walletId',
   token: '$token',
   authenticate_type: '$authenticateType',
   user_token: '$userToken',
   easy_type: '$easyType',
   metadata: ${getMetadataStringAndroid()},
   extra: ${json.encode(extra?.toJson()).replaceAll("\"", "'")},
   user: ${user.toString()},
   items: ${getItems()}
 }
  """;
}