NotificationCollectionDelegate
Methods that are invoked when the event of the message collection occurs.
Since
4.6.0-
Invoked when the messages are added.
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Invoked when the message are updated.
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Invoked when the message are deleted.
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Invoked when the channel that has the message collection is changed.
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Invoked when the channel that has the message collection is deleted.
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Invoked when the huge gap has been detected.