code: def timestamp_normalized(self):
          
          if not self.timestamp:
              return None
  
          if isinstance(self.timestamp, six.integer_types):
              return self.timestamp
  
          if isinstance(self.timestamp, timedelta):
              tmp = datetime.now() + self.timestamp
          else:
              tmp = self.timestamp
  
          return int(time.mktime(tmp.timetuple()) * 1e+6 + tmp.microsecond)
docs: we're expecting self.timestamp to be either a long, int, a datetime, or a timedelta
          :return: