response mapping

[gastzars]

Map a response from API to a class or interface. And, also error code listed below.

Error codes

Refer to the following descriptions:

Code	Description
0	No error
1	Invalid JSON payload
2	Missing X-BTK-APIKEY
3	Invalid API key
4	API pending for activation
5	IP not allowed
6	Missing / invalid signature
7	Missing timestamp
8	Invalid timestamp
9	Invalid user
10	Invalid parameter
11	Invalid symbol
12	Invalid amount
13	Invalid rate
14	Improper rate
15	Amount too low
16	Failed to get balance
17	Wallet is empty
18	Insufficient balance
19	Failed to insert order into db
20	Failed to deduct balance
21	Invalid order for cancellation
22	Invalid side
23	Failed to update order status
24	Invalid order for lookup
30	Limit exceeds
40	Pending withdrawal exists
41	Invalid currency for withdrawal
42	Address is not in whitelist
43	Failed to deduct crypto
44	Failed to create withdrawal record