[Question] How to docs @action function api with require body and required symbol ?

[625781186]

Checklist

• I have verified that that issue exists against the master branch of Django REST framework.
• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• This is not a usage question. (Those should be directed to the discussion group instead.)
• This cannot be dealt with as a third party library. (We prefer new functionality to be in the form of third party libraries where possible.)
• I have reduced the issue to the simplest possible case.
• I have included a failing test as a pull request. (If you are unable to do so we can still accept the issue.)

Steps to reproduce

Env :
drf version : 3.11.0

The repo url of demo :
https://github.com/625781186/drf-docs-question

code :

I using @action to add new api , but the documentation(http://127.0.0.1:8000/docs/#worksmain-bulk_operation-partial_update) wasn't what I wanted.

Expected behavior

Actual behavior

[625781186]

@xordoquy
@tomchristie
please help me~~