user-bootloader example code for stm8

I was following the Application note document on [AN2659](https://www.st.com/resource/en/application_note/an2659-stm8-inapplication-programming-iap-using-a-customized-userbootloader-stmicroelectronics.pdf) as my purpose was to implement a custom bootloader on stm8 for firmware update.

This application note mentions an example code that comes with this application note but i am not able to find that example code mentioned anywhere.

I will be grateful if someone can help me find that out.