def METHOD_NAME(self):
    """The EmitterGroup auto-connect"""
    class Source:
        def on_em1(self, ev):
            self.result = 1
        def em2_event(self, ev):
            self.result = 2
        def em3_event(self, ev):
            self.result = 3
    src = Source()
    grp = EmitterGroup(source=src, em1=Event, auto_connect=False)
    src.result = None
    grp.em1()
    assert src.result is None
    grp = EmitterGroup(source=src, em1=Event, auto_connect=True)
    src.result = None
    grp.em1()
    assert src.result == 1
    grp.auto_connect_format = "%s_event"
    grp.add(em2=Event)
    src.result = None
    grp.em2()
    assert src.result == 2
    grp.add(em3=Event, auto_connect=False)
    src.result = None
    grp.em3()
    assert src.result is None