human
Solve the following python programming problem given the following code:
def test_encodable_attrs(self) : 
    def attrs() : 
        return self.alias.getEncodableAttributes (self.model) 
self.assertEqual (attrs (), { 
        'id' : None, 
}) 
    x = models.SimplestModel () 
    x.save () 
    self.addCleanup (attrs.delete) 
    self.model.bar = x 
    self.assertEqual (attrs (), { 
        'id' : None, 
        'bar' : x, 
}) 

    
    

    Fix the buggy line: self.addCleanup (attrs.delete)
assistant
#Here is Python code to fix the buggy line: self.

self.addCleanup (x.delete)