Take the banknote values from NV10 acceptor

[AleksandrElizarov]

Hello
I'm using NV10 and don't know what function to use to take the banknote values ​​and write the total amount to a variable.
This library implements that in a loop the bill acceptor is polled and the text is output to the console, and I need to take the value of the bills.
Please share an example.