REST Client / HTTP Client step broken when using GET method with csv response body

[AFBFEACD CCFFEADE]

Hi everyone, I'm using pentaho data integration tool to fetch data from REST API using GET method with CSV body response.

So I'm using step "REST client" with these parameters: 

Main:
URL from field

HTTP method: GET

Output field: result (or whatever - I don't know what should I use because there are no fields in response body, just csv).

Headers:

accept: */*

Content-Type: application/csv

Autorization: Bearer <my token>

And then "Text file output" to write CSV file with recieved data.

So I'm getting this in file (seprarator |):

```result
"BARCODE|BRANDCODE|... 

"

``` CSV data till " symbol. Here result, fist " and last " are redundant. I need only CSV part.

Another option is leave Output field in previous step empty. In this case I'm getting just all my fields that I used in transformation seprarated with |:

```accept|Authorization|Content-Type|filename|token|partIds|Auth|partId|download_url|download_postfix|dwnld_url
*/*|Bearer |application/csv|products.csv|ey... 

``` and etc.

Any ideas how to get only CSV part from REST API call?