How to extend build-in asset inspector

Unity Engine
1

hello,I want to add some comment and button on some asset’s(etc.prefab,timeline asset) inspector,
how can I extend them？
all assets’ type can extend is the best
Thank you.
6726682--774115--upload_2021-1-15_9-50-8.png

2

Are you just asking how to make a custom inspector? That’s easy, just look for the tutorials all over Youtube.

3

Unfortunately, it doesn’t seem easily possible to extend the editor for built-ins that already have custom editor logic.

4

Hello,I want to extend the exist asset, such as timeline asset, for example, I want to add a MyFrameRate property on it.

5

Yeah,I google it and I can’t find a good way go extend it,so I come to the forum to ask.
Thanks for reply