Merge pull request #487 from Pbopbo/humble

Adds support for namespaces to TurtleBot4Navigator.

Author: hilary-luo

turtlebot4_navigation/turtlebot4_navigation/turtlebot4_navigator.py

@@ -52,8 +52,8 @@ class TurtleBot4Navigator(BasicNavigator):
     is_docked = None
     creating_path = False
 
-    def __init__(self):
-        super().__init__()
+    def __init__(self, namespace=''):
+        super().__init__(namespace=namespace)
 
         self.create_subscription(DockStatus,
                                  'dock_status',