How to use the transitions.extensions.markup.rep function in transitions

def test_rep_partial_no_args_no_kwargs(self):
        def check():
            return True
        pcheck = partial(check)
        self.assertTrue(pcheck())
        self.assertEqual(rep(pcheck), "check()")

def test_rep_partial_with_kwargs(self):
        def check(result=True):
            return result
        pcheck = partial(check, result=True)
        self.assertTrue(pcheck())
        self.assertEqual(rep(pcheck), "check(result=True)")

def test_rep_string(self):
        self.assertEqual(rep("string"), "string")

def test_rep_callable_class(self):
        class Check(object):
            def __init__(self, result):
                self.result = result

            def __call__(self):
                return self.result

            def __repr__(self):
                return "%s(%r)" % (type(self).__name__, self.result)

        ccheck = Check(True)
        self.assertTrue(ccheck())
        self.assertEqual(rep(ccheck), "Check(True)")

def test_rep_function(self):
        def check():
            return True
        self.assertTrue(check())
        self.assertEqual(rep(check), "check")

def test_rep_partial_with_args(self):
        def check(result):
            return result
        pcheck = partial(check, True)
        self.assertTrue(pcheck())
        self.assertEqual(rep(pcheck), "check(True)")

def test_rep_partial_with_args_and_kwargs(self):
        def check(result, doublecheck=True):
            return result == doublecheck
        pcheck = partial(check, True, doublecheck=True)
        self.assertTrue(pcheck())
        self.assertEqual(rep(pcheck), "check(True, doublecheck=True)")