code: def chat_unfurl(
          self, *, channel: str, ts: str, unfurls: dict, **kwargs
      ) -> SlackResponse:
          
          self._validate_xoxp_token()
          kwargs.update({"channel": channel, "ts": ts, "unfurls": unfurls})
          return self.api_call("chat.unfurl", json=kwargs)
docs: Provide custom unfurl behavior for user-posted URLs.
  
          Args:
              channel (str): The Channel ID of the message. e.g. 'C1234567890'
              ts (str): Timestamp of the message to add unfurl behavior to. e.g. '1234567890.123456'
              unfurls (dict): a dict of the specific URLs you're offering an unfurl for.
                  e.g. {"https://example.com/": {"text": "Every day is the test."}}