Add missing decorater; property

65e2872

Author: hepheir

w3/python/core/fundamental_interface/Node.py

@@ -175,13 +175,15 @@ def _init_child_nodes(self,
         else:
             self._child_nodes = NodeList(iter(child_nodes))
 
+    @property
     def first_child(self) -> Optional[_AnyNode]:
         """The first child of this node. If there is no such node, this returns `None`.
         """
         if not self.child_nodes:
             return None
         return self.child_nodes.item(0)
 
+    @property
     def last_child(self) -> Optional[_AnyNode]:
         """The last child of this node. If there is no such node, this returns `None`.
         """