human
Solve the following python programming problem given the following code:
def _fake_call_get_object_property(self, uuid, result) : 
    def fake_call_method(vim, method, vm_ref, prop) : 
        expected_prop = ('config.extraConfig["volume-%s"]' % uuid) 
        self.assertEqual ('VirtualMachine', vm_ref._type) 
        self.assertEqual (expected_prop, prop) 
        return result 
return <MASK> 
    
    Given the code above, what is a proper replacement for <MASK>?
assistant
#Here is a proper replacement for <MASK>.
def fake_call_method(