public virtual void ProcessElement(StreamRecord <TElement> record)
{
var element = record.Value;
var newTimestamp = UserFunction.ExtractTimestamp(element, record.HasTimestamp ? record.Timestamp : long.MinValue);
Output.Collect(record.Replace(record.Value, newTimestamp));
var nextWatermark = UserFunction.CheckAndGetNextWatermark(element, newTimestamp);
if (nextWatermark != null && nextWatermark.Timestamp > _currentWatermark)
{
_currentWatermark = nextWatermark.Timestamp;
Output.EmitWatermark(nextWatermark);
}
}