human
Solve the following python programming problem given the following code:
def action(* args, **kw) : 
    "Decorator to define custom actions.
    
    The decorated function will be installed as the actions's
    :meth:`run_from_ui <Action.run_from_ui>` method.

    Same signature as :meth:`Action.__init__`.
    In practice you'll possibly use:
    :attr:`label <Action.label>`,
    :attr:`help_text <Action.help_text>` and
    :attr:`required_roles <lino.core.permissions.Permittable.required_roles>`.

    " 
    def decorator(fn) : 
        assert (not ('required' in kw)) 
        kw.setdefault ('custom_handler', True) 
        a = Action (* args, ** kw) 
        def wrapped(ar) : 
            obj = ar.selected_rows [0] 
            return fn (obj, ar) 
a.run_from_ui = wrapped 
        return a 
return args 

    
    

    Fix the buggy line: return args
assistant
#Here is Python code to fix the buggy line: return args
.

return def decorator(