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e48bcb599b
as the versioned_history example supplies an integer version counter for the purposes of generating an audit trail, this counter is also suited to be used for optimistic concurrency detection using the version_id_col feature. Build upon the test that was first added inac54ba0f2dto provide a flag and some basic documentation. Fixes: #2861 Change-Id: I50236beae4c49b33ada8fdcc4c524273b4e21c75 (cherry picked from commit48b37a062a)