Learnable behaviour tree

Hi, guys! I need some help. I need somehow to dynamically study my behaviour tree. For example: i have 2 characters: Rengar and Kha’Zix. Rengar can: attack, jump, hide in steals, etc. Kha’Zix can only walk towards enemy. Idea is next: Kha’Zix’s behaviour tree must “learn” from Rengar’s behaviour tree. Is it possible, or i am just an idiot?) Thank you:)