How to call project scripts in plugin script

Cocos Creator
1

I am using Cocos Creator 3.8.3.
I have written a plugin and created a scene script according to the documentation, which allows me to call engine APIs within the script. However, I would like to call other scripts from my project. Is there a way to achieve this?

manual/en/editor/extension/scene-script.html

The title of this article is “Calling the Engine API and Project Script,” but it only covers how to call the Engine API and does not explain how to call Project Scripts.
I look forward to your response. Thank you.