Detect late data in processing time

[Soheil Pourbafrani]

In Event Time, we can gather bad data using OutputTag, because in Event
Time we have Watermark and we can detect late data. But in processing time
mode we don't have any watermark to detect bad data. I want to know can we
set watermark (for example according to taskmanager's timestamp) and use
processing time in creating time windows?