meta_key and _postmeta – which plugin?

You know the key name and want to know which plugin placed it? Use a full text, recursive search tool like grep or findstr to find occurrences of the key name in *.php files within the /plugins/ folder and its subfolders. This can fail to find the key if it’s dynamically constructed like $key = 'abc-'. $name;. You could instead search for “update_post_meta” but you’ll get a lot of false positives.

It’s so obvious, thanks ??
I made it, I found it ??