session save return type (#133)

src/Server/Session/Session.php

@@ -51,9 +51,9 @@ class Session implements SessionInterface
         return $this->store;
     }
 
-    public function save(): void
+    public function save(): bool
     {
-        $this->store->write($this->id, json_encode($this->data, \JSON_THROW_ON_ERROR));
+        return $this->store->write($this->id, json_encode($this->data, \JSON_THROW_ON_ERROR));
     }
 
     public function get(string $key, mixed $default = null): mixed

src/Server/Session/SessionInterface.php

@@ -26,7 +26,7 @@ interface SessionInterface extends \JsonSerializable
     /**
      * Save the session.
      */
-    public function save(): void;
+    public function save(): bool;
 
     /**
      * Get a specific attribute from the session.