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14 from zope.component.interfaces import Interface, IObjectEvent
15 from zope.interface import Attribute
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19 """
20 ZenHub has noticed an invalidation.
21 """
22 oid = Attribute("OID of the changed object")
23
24
26 """
27 An object has been updated.
28 """
29
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32 """
33 An object has been deleted.
34 """
35
37 """
38 Processes subdevices in batches.
39 """
40
42 """
43 Process subdevices of device class in batches calling callback with
44 each device. The service UID uniquely identifies the service, so the
45 processing of the same device_class-service pair is not duplicated.
46 """
47