CPC Ka Sabse Khatarnaak Tark - "Mistake of Law

Bhai, 3 saal se ye hi padh raha hoon, lekin kai baar socha hai ki textbook mein "mistake of law" ka explanation bahut hi kamjor hai. Wahan pe likha hai ki yeh woh situation hai jab aapko lagta hai ki aap kanoon ke anusaar kar rahay ho, lekin asli mein kanoon mein koi chot hai. Lekin main kya samajunga ki kya hai "mistake of law" aur kaise different hai "honest mistake" se? Koi bhai ne aisa scenario dekha hai ya suna hai jahaan yeh tark apply hua ho?