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Handle get_all_entities_changed returning None
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@ -858,11 +858,14 @@ class PresenceEventSource(object):
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friends.add(user_id) # So that we receive our own presence
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user_ids_changed = set()
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changed = None
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if from_key and from_key < 100:
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# For small deltas, its quicker to get all changes and then
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# work out if we share a room or they're in our presence list
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changed = stream_change_cache.get_all_entities_changed(from_key)
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# get_all_entities_changed can return None
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if changed is not None:
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for other_user_id in changed:
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if other_user_id in friends:
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user_ids_changed.add(other_user_id)
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