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abstract fun getMapItem(mapSidOrUniqueName: String, itemKey: String, callback: SuccessListener<SyncMapJava.Item?>): CancellationToken
Retrieve Item from the SyncMapJava without opening it.
Return
CancellationToken which allows to cancel network request.
Parameters
map
SID or unique name of existing SyncMapJava.
item
Key of the item to retrieve.
callback
Async result listener that will receive a value of the SyncMapJava.Item in its onSuccess() callback (null if item doesn't exist) or any error in onFailure() callback.