Why do you need it?

When serving some static files with app, users want to access files with or without suffix.

How could it be?

Implement one annotation witch support try_files actions, like below:
higress.io/try_files: '$1 $1.html $1/index.html $1/'.

When user access one path, try response content of some more paths, eg, when user access example.com/a, response content using /a, /a.html,/a/index.html, /a/ inorder, and only return non 200 status code when all these paths returns null.

Other related information

nginx/try_files