Problem:
- util._refresh() is only used by `inlay_hint.lua` and `document_color.lua`, and
both have their own wrapper functions;
- util._refresh() provides unified parameters, but this layer of wrapping is
almost meaningless because
- document color does not need the range parameter;
- inlay hint requires a range parameter, but it is not complicated
Therefore, it can be considered redundant.
ref https://github.com/neovim/neovim/pull/32887#discussion_r1996413602
Solution:
Remove it.
73fbc693b5