IPoyntReceiptPrintingService is missing

Hi everyone.

I am making a app with xamarin, and so far so good.

But now i am trying to modifiy the receipt and printing some stuf, but i can do it because there is a missing Interface.

I am using binding library c# to convert the .AAR, and everything is working fine, except for the IPoyntReceitPrintingService, this interface doesnt show in any place, but it is in the sample code on github.

in the sample its:
“import co.poynt.os.services.v1.IPoyntReceiptPrintingService”

anyone knows what is wrong?

Importants info:
The IPoyntReceiptPrintingServiceListener is showing normal to me.
i am using ‘poynt-sdk-1.2.27.aa’

Thanks you guys.