human
Solve the following python programming problem given the following code:
@ classmethod 
def get_queryset(self, ar) : 
    "
        Return an iterable over the items processed by this table.
        Override this to use e.g. select_related() or to return a list.

        Return a customized default queryset
    
        Example::

          def get_queryset(self):
              return self.model.objects.select_related('country', 'city')

        " 
    return self.model.get_request_queryset (self) 

    
    

    Fix the buggy line: return self.model.get_request_queryset (self)
assistant
#Here is Python code to fix the buggy line: return self.

return self.model.get_request_queryset (ar)