docs: def outLineReceived(self, line):
          """
          Handle data via stdout linewise. This is useful if you turned off
          buffering.
  
          In your subclass, override this if you want to handle the line as a
          protocol line in addition to logging it. (You may upcall this function
          safely.)
          """
          log_debug('<<< {name} stdout >>> {line}', 
                  name=self.name,
                  line=self.outFilter(line))