human
Solve the following python programming problem given the following code:
def _get_extensions(self, plugin) : 
    from traitsui.value_tree import ListNode, StringNode 
    class MyListNode (ListNode) : 
        label = Str 
        def format_value(self, value) : 
            return self.label 
extensions = [] 
    for (trait_name, trait) in plugin.traits ().items () : 
        if (trait.extension_point is not None) : 
            node = MyListNode (label = plugin.extension_point, value = plugin.get_extensions (trait.extension_point)) 
            extensions.append (node) 
return extensions 

    
    

    Fix the buggy line: node = MyListNode (label = plugin.extension_point, value = plugin.get_extensions (trait.extension_point))
assistant
#Here is Python code to fix the buggy line: node = MyListNode (label = plugin.

node = MyListNode (label = trait.extension_point, value = plugin.get_extensions (trait.extension_point))