Consider this simplified code snippet for a notification system:

Consider this simplified code snippet for a notification system:

class Subject:
    def __init__(self):
        self.observers = []
    def subscribe(self, observer):
        self.observers.append(observer)
    def notify(self, message):
        for obs in self.observers:
            obs.update(message)

class Observer:
    def update(self, message):
        print(f"Received: {message}")

subject = Subject()
obs1 = Observer()
subject.subscribe(obs1)
subject.notify("State changed")

What will be the output when subject.notify("State changed") is called?