unregister Callback For Challenge Cancelled Event
final Unit unregisterCallbackForChallengeCancelledEvent(String appId, String registrationId)
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Unregister the callback for challenge cancelled that is associated with the given registration ID. Registration ID is provided from the registerCallbackForRequestCancelledEvent function.
Parameters
app Id
The AppID of your account. Ignore this param if you use only one AppID.
registration Id
The registration ID.