code: def send_messages(self, email_messages):
          
          if not email_messages:
              return
  
          sent_message_count = 0
  
          for email_message in email_messages:
              if self._send(email_message):
                  sent_message_count += 1
          return sent_message_count
docs: Sends one or more EmailMessage objects and returns the
          number of email messages sent.
  
          Args:
              email_messages: A list of Django EmailMessage objects.
          Returns:
              An integer count of the messages sent.
          Raises:
              ClientError: An interaction with the Amazon SES HTTP API
                  failed.