I think it's up to you personally, because this is at your own expense. Well, if you say you won't share it, well, it's ok, but the leader actually gives it to you. How can you refuse to give leadership face? But if you can share this well, your knowledge is also personal. Then, you can also improve your professional ability in the company. Let others judge you. If you really don't want to, you'd better communicate with the leader.