https://labelsuperrecords.com/zxing-org/
If you are looking for zxing org? After that, this is the location where you can find some sources that provide detailed information.
zxingorg
https://zxing.github.io/zxing/apidocs/com/google/zxing/qrcode/encoder/class-use/QRCode.html
use: package: com.google.zxing.qrcode.encoder, class: QRCode
usesclasscomgooglezxing