Fix add_child on Marker not returning self

hansthen · hansthen · commit ffafdda1e54e · 2025-05-11T20:22:42.000+02:00
diff --git a/folium/map.py b/folium/map.py
@@ -445,6 +445,7 @@ def add_child(self, child, name=None, index=None):
             self.set_icon(child)
         else:
             super().add_child(child, name, index)
+        return self
 
 
 class Popup(MacroElement):
