Question How to extend build-in asset inspector

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.

 

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

 

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

 

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

 

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