Add generic for PagerInterface

src/Datagrid/Pager.php

@@ -18,6 +18,9 @@
  *
  * @author Fabien Potencier <[email protected]>
  * @author Thomas Rabaix <[email protected]>
+ *
+ * @phpstan-template T of ProxyQueryInterface
+ * @phpstan-implements PagerInterface<T>
  */
 abstract class Pager implements \Iterator, \Countable, \Serializable, PagerInterface
 {
@@ -113,6 +116,8 @@ abstract class Pager implements \Iterator, \Countable, \Serializable, PagerInter
 
     /**
      * @var ProxyQueryInterface|null
+     *
+     * @phpstan-var T|null
      */
     protected $query;
 
@@ -856,6 +861,8 @@ public function setQuery($query)
 
     /**
      * @return ProxyQueryInterface|null
+     *
+     * @phpstan-return T|null $query
      */
     public function getQuery()
     {

src/Datagrid/PagerInterface.php

@@ -30,6 +30,8 @@
  * @method array                    getLinks(?int $nbLinks = null)
  * @method bool                     haveToPaginate()
  * @method ProxyQueryInterface|null getQuery()
+ *
+ * @phpstan-template T of ProxyQueryInterface
  */
 interface PagerInterface
 {
@@ -79,10 +81,17 @@ public function setPage($page);
 //    public function isLastPage(): bool;
 
 //    NEXT_MAJOR: uncomment this method in 4.0
+//    /**
+//     * @return ProxyQueryInterface|null
+//     *
+//     * @phpstan-return T|null
+//     */
 //    public function getQuery(): ?ProxyQueryInterface;
 
     /**
      * @param ProxyQueryInterface $query
+     *
+     * @phpstan-param T $query
      */
     public function setQuery($query);