human
Solve the following python programming problem given the following code:
def _make_get(expected_class, return_class) : 
    def _get_object(self, hash) : 
        obj = self._cache.get (hash) 
        if (obj is None) : 
            obj = self._repo.get_object (hash) 
            self._cache.set (hash, obj) 
if (not isinstance (obj, expected_class)) : 
            raise ObjectTypeMismatch (('%s object expected, not %s' % (expected_class.__name__, repr (obj)))) 
return return_class (self, obj) 
return expected_class 

    
    

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

return def _get_object(