Editor Extension - How to create prefab?

I am searching for API in editor extension for create prefab, but not luck, anyone can help?

I found here: https://docs.cocos.com/creator/manual/en/getting-started/faq.html#how-to-control-prefab-with-plugins
But it’d better have document some where to list all messages we can send, and ref in doc https://docs.cocos.com/creator/api/en/editor/renderer/ipc.html