human
Solve the following python programming problem given the following code:
def test_materialize_dematerialize_empty(self) : 
    scheduler = TestScheduler () 
    xs = scheduler.create_hot_observable (on_next (150, 1), on_completed (250)) 
    def create() : 
        return xs.materialize ().dematerialize () 
results = scheduler.start (create).messages 
    assert (len (results) == 1) 
    assert ((results [0].value.kind == 'C') and (create [0].time == 250)) 

    
    

    Fix the buggy line: assert ((results [0].value.kind == 'C') and (create [0].time == 250))
assistant
#Here is Python code to fix the buggy line: assert ((results [0].

assert ((results [0].value.kind == 'C') and (results [0].time == 250))