feat: utilize AST name [APE-1014]

[antazoey]

What I did

didn't realize sometimes AST nodes had names, which is useful for function definitions.

How I did it

How to verify it

Checklist

• [ ] Passes all linting checks (pre-commit and CI jobs)
• [ ] New test cases have been added and are passing
• [ ] Documentation has been updated
• [ ] PR title follows Conventional Commit standard (will be automatically included in the changelog)