docs: def set_timestamp(self, data):
          """ Interpret time-related options, apply queue-time parameter as needed """
          if 'hittime' in data:  # an absolute timestamp
              data['qt'] = self.hittime(timestamp=data.pop('hittime', None))
          if 'hitage' in data:  # a relative age (in seconds)
              data['qt'] = self.hittime(age=data.pop('hitage', None))