Standard API response format
| Field | Setter Type | Getter Type | Required | Description | Example |
|---|---|---|---|---|---|
code |
long | long | ✔️ | HTTP status code | 200 |
msg |
String | String | ✔️ | Response message | success |
data |
@Nullable Object | JsonNullable<Object> | ➖ | Response data Supports tri-state: omit setter to leave unset, pass null to send explicit JSON null. |