code: def message_create(self, originator, recipients, body, params=None):
          
          if params is None: params = {}
          if type(recipients) == list:
              recipients = ','.join(recipients)
  
          params.update({'originator': originator, 'body': body, 'recipients': recipients})
          return Message().load(self.request('messages', 'POST', params))
docs: Create a new message.