Add API to set callbacks when adding data frame. There is one onDataFrameTerminate callback now. If it's not assigned, then KVS app would assign default implementation of onDataFrameTerminate.
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Add API to set callbacks when adding data frame. There is one onDataFrameTerminate callback now. If it's not assigned, then KVS app would assign default implementation of onDataFrameTerminate.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.