code: def channels_unarchive(self, *, channel: str, **kwargs) -> SlackResponse:
          
          self._validate_xoxp_token()
          kwargs.update({"channel": channel})
          return self.api_call("channels.unarchive", json=kwargs)
docs: Unarchives a channel.
  
          Args:
              channel (str): The channel id. e.g. 'C1234567890'