Merge branch '6.4' into 7.3

* 6.4:
  Replace __sleep/wakeup() by __(un)serialize() for throwing and internal usages

Author: nicolas-grekas

Loader/Configurator/CollectionConfigurator.php

@@ -36,12 +36,12 @@ public function __construct(
         $this->route = new Route('');
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup(): void
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

Loader/Configurator/ImportConfigurator.php

@@ -29,12 +29,12 @@ public function __construct(
         $this->route = $route;
     }
 
-    public function __sleep(): array
+    public function __serialize(): array
     {
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup(): void
+    public function __unserialize(array $data): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }