human
Solve the following python programming problem given the following code:
@ classmethod 
def make(cls, domain_cls, n_steps = 500) : 
    class Tester (unittest.TestCase, cls) : 
        def setUp(self) : 
            self._n_steps = n_steps 
            self._domain_cls = domain_cls 
Tester.__name__ = (n_steps.__name__ + 'Tester') 
    return Tester 

    
    

    Fix the buggy line: Tester.__name__ = (n_steps.__name__ + 'Tester')
assistant
#Here is Python program to fix the buggy line: Tester.

Tester.__name__ = (domain_cls.__name__ + 'Tester')