postData method
Implementation
Map<String, dynamic> postData() => {
"userID": userID,
"deliveryMode": deliveryMode,
"totalPetCost": totalPetCost,
"deliveryCharges": deliveryCharges,
"taxAmount": taxAmount,
"finalAmount": finalAmount,
"deliveryAddressID": deliveryAddressID,
"billingAddressID": billingAddressID,
};