code: def selector(self):
          
          operator = ">=" if self.inclusive else ">"
          if isinstance(self.value, datetime.datetime):
              timestamp = (calendar.timegm(self.value.utctimetuple()) * 1000) + (self.value.microsecond/1000)
              return ("amqp.annotation.x-opt-enqueued-time {} '{}'".format(operator, int(timestamp))).encode('utf-8')
          if isinstance(self.value, six.integer_types):
              return ("amqp.annotation.x-opt-sequence-number {} '{}'".format(operator, self.value)).encode('utf-8')
          return ("amqp.annotation.x-opt-offset {} '{}'".format(operator, self.value)).encode('utf-8')
docs: Creates a selector expression of the offset.
  
          :rtype: bytes