add
abstract fun addListItem(listSidOrUniqueName: String, jsonData: String, callback: SuccessListener<SyncListJava.Item>): CancellationToken
Ad Item in the SyncListJava without opening it.
Return
CancellationToken which allows to cancel network request.
Parameters
list
SID or unique name of existing SyncListJava.
json
Item data to set as a serialized JSON object.
callback
Async result listener that will receive new value of the SyncListJava.Item in its onSuccess() callback or any error in onFailure() callback.