NormalizedException doesn't show up at https://doc.wikimedia.org/ in the "boxes" section. The documentation exists and is listed on the index page, but not on the main page. Is that manually maintained? Are there extra criteria for what does or doesn't get shown there? It took me a while to figure out that it isn't just a case of documentation generation being broken...
Plenty of things seem to be missing from there. Is it expected to be in sync with e.g. https://www.mediawiki.org/wiki/Category:PHP_libraries or does it express some kind of judgement about importance?