code: def build_message(self, data):
          '''
          Return a Message instance according to the data received from
          Facebook Messenger API.
          '''
          if not data:
              return None
  
          return Message(
              id=data['message']['mid'],
              platform=self.platform,
              text=data['message']['text'],
              user=data['sender']['id'],
              timestamp=data['timestamp'],
              raw=data,
              chat=None,  # TODO: Refactor build_messages and Message class
          f build_message(self, data):
          '''
          Return a Message instance according to the data received from
          Facebook Messenger API.
          '''
          if not data:
              return None
  
          return Message(
              id=data['message']['mid'],
              platform=self.platform,
              text=data['message']['text'],
              user=data['sender']['id'],
              timestamp=data['timestamp'],
              raw=data,
              chat=None,  # TODO: Refactor build_messages and Message class
          )
docs: Return a Message instance according to the data received from
          Facebook Messenger API.