I wanna to suggest a implementation

[oatgh2]

I suggest a way to get value into buffer. I cloned the project and implemented this

#Why do I do this? Because I want to send the buffer over the Internet to a TCP socket.
I know it's not the best way to do this, the best way is an implementation inside the Printer class. But I don't want to be too invasive to the project, so I'll leave it to you to implement it if you want.