[Nominatim] Municipality not in list of 'localityFields'

I came across some reverse geocoding results where Nominatim.php didn't return a 'locality'. In my opinion, this latlng query should have 'Purmerend' as its locality, as it's the municipal boundary:

https://nominatim.openstreetmap.org/ui/reverse.html?lat=52.50741&lon=4.93279&zoom=18
https://nominatim.openstreetmap.org/ui/details.html?osmtype=W&osmid=6593763&class=highway

Upon debugging, I noticed that inside jsonResultToLocation(), on line 209, 'municipality' was not considered a 'locality'.

$localityFields = ['city', 'town', 'village', 'hamlet'];

Is this a matter of definition?

Adding 'municipality' fixes my issue:

$localityFields = ['city', 'town', 'village', 'hamlet', 'municipality'];

Nominatim.php の jsonResultToLocation()（209 行目付近）から始め、提供された reverse-geocoding 結果に対して localityFields がどのように使用されているかを確認してください。Purmerend の例の municipality 値が locality として返されることを確認し、リストされている他の locality フィールドについても既存の動作が引き続き正しいことを検証してください。