Can I sort all functions in my dart project?

We can sort dart functions by VSCode settings: "source.sortMembers": "explicit"

But when I want to sort members for all my dart files in lib, what should I do?

Is source.sortMembers sort functions by some opened code? Maybe I can clone it to sort all my members that in my project.

I have to maintain an old project, the members in class of the project was unsorted, I want to sort all members in each file of the project.

thanks.