ReadTransaction always returns an empty result — wrong response type

[mkoziy]

TransactionsAPIService.ReadTransaction (GET /users/{user_guid}/transactions/{transaction_guid}) is typed to return TransactionsResponseBodyIncludes, but the endpoint responds with a singular transaction object. The SDK unmarshals into a struct that only maps the plural transactions key, so the payload is silently dropped and the returned value is always empty — with no error.

Version

v1.13.0 (latest). Also present on master HEAD.

Actual API response

{
  "transaction": {
    "guid": "TRN-...",
    ...
  }
}

SDK type used

ReadTransactionExecute returns *TransactionsResponseBodyIncludes (api_transactions.go#L1834), whose only relevant field is:

Transactions []TransactionIncludesResponse json:"transactions,omitempty"

json.Unmarshal ignores the unknown transaction key, leaves Transactions nil, and returns no error. Callers see an empty list for a transaction that actually exists.

Reproduce

resp, httpResp, err := client.TransactionsAPI.
    ReadTransaction(ctx, userGUID, transactionGUID).
    Includes("merchants,classifications,geolocations,repeating_transactions").
    Execute()

// err == nil, httpResp.StatusCode == 200
// resp.GetTransactions() -> [] (empty), despite the transaction existing

Expected

ReadTransaction should deserialize the transaction object and expose it.