human
Solve the following python programming problem given the following code:
def _wx_initialize_editor_dock_control(self, editor, editor_dock_control) : 
    " Initializes an editor dock control.

        fixme: We only need this method because of a problem with the dock
        window API in the 'SetStructureHandler' class. Currently we do not get
        a reference to the dock control in 'resolve_id' and hence we cannot set
        up the 'on_close' and trait change handlers etc.

        " 
    editor_dock_control.set_name (editor.name) 
    if (hasattr (editor, 'ui') and (editor.ui is not None)) : 
        editor_dock_control.dockable = DockableViewElement (should_close = True, ui = editor.ui) 
editor_dock_control.on_close = editor._wx_on_editor_closed 
    def on_id_changed(editor, trait_name, old, new) : 
        editor_dock_control.id = editor.id 
        return 
editor.on_trait_change (on_id_changed, 'id') 
    def on_name_changed(editor, trait_name, old, new) : 
        editor_dock_control.set_name (editor.name) 
        return 
editor.on_trait_change (on_name_changed, 'name') 
    def on_activated_changed(editor_dock_control, trait_name, old, new) : 
        if (editor_dock_control._editor is not None) : 
            editor_dock_control._editor.set_focus () 
return 
editor_dock_control.on_trait_change (on_activated_changed, 'activated') 
    return 

    
    

    Fix the buggy line: editor_dock_control.on_close = editor._wx_on_editor_closed
assistant
#Here is Python program to fix the buggy line: editor_dock_control.

editor_dock_control.on_close = self._wx_on_editor_closed