Hi! I'm wondering how keyed process window functions assign event time to their result events. From StackOverflow, I found this useful answer > The output events that are created by time windows have their timestamps set to the maximum timestamp that falls within the window. So it's basically the session boundary of the session containing the event. – The element being created as output from the window gets its timestamp from the window.

timestampedCollector.setAbsoluteTimestamp(window.maxTimestamp())

Is this behaviour documented somewhere in Flink documentation? Does this mean that, say, events outputted from 20-minute window have their event time assigned as

10:19:59.999

?