Implements new return types

docs/source/_static/code/exports/CountPerson.php

@@ -72,24 +72,24 @@ class CountPerson implements ExportInterface
         };
     }
 
-    public function getQueryKeys($data)
+    public function getQueryKeys($data): array
     {
         // this array match the result keys in the query. We have only
         // one column.
         return ['export_result'];
     }
 
-    public function getResult($query, $data, \Chill\MainBundle\Export\ExportGenerationContext $context)
+    public function getResult($query, $data, \Chill\MainBundle\Export\ExportGenerationContext $context): array
     {
         return $query->getQuery()->getResult(Query::HYDRATE_SCALAR);
     }
 
-    public function getTitle()
+    public function getTitle(): string|\Symfony\Contracts\Translation\TranslatableInterface
     {
         return 'Count peoples';
     }
 
-    public function getType()
+    public function getType(): string
     {
         return Declarations::PERSON_TYPE;
     }