fix: optional type definition for on before event in parse node

baywet · baywet · commit d832cdcdb693 · 2025-06-26T12:20:53.000-04:00
Signed-off-by: Vincent Biret &lt;vibiret@microsoft.com&gt;
diff --git a/packages/abstractions/kiota_abstractions/serialization/parse_node.py b/packages/abstractions/kiota_abstractions/serialization/parse_node.py
@@ -177,7 +177,7 @@ def get_bytes_value(self) -> Optional[bytes]:
 
     @property
     @abstractmethod
-    def on_before_assign_field_values(self) -> Callable[[Parsable], None]:
+    def on_before_assign_field_values(self) -> Optional[Callable[[Parsable], None]]:
         """Gets the callback called before the node is deserialized.
 
         Returns:
