[4.4] Add return types on internal|final|private methods (bis)

Author: nicolas-grekas

Data/Generator/RegionDataGenerator.php

@@ -159,10 +159,7 @@ protected function generateDataForMeta(BundleEntryReaderInterface $reader, strin
         ];
     }
 
-    /**
-     * @return array
-     */
-    protected function generateRegionNames(ArrayAccessibleResourceBundle $localeBundle)
+    protected function generateRegionNames(ArrayAccessibleResourceBundle $localeBundle): array
     {
         $unfilteredRegionNames = iterator_to_array($localeBundle['Countries']);
         $regionNames = [];