code: def reactions_add(self, *, name: str, **kwargs) -> SlackResponse:
          
          kwargs.update({"name": name})
          return self.api_call("reactions.add", json=kwargs)
docs: Adds a reaction to an item.
  
          Args:
              name (str): Reaction (emoji) name. e.g. 'thumbsup'
              channel (str): Channel where the message to add reaction to was posted.
                  e.g. 'C1234567890'
              timestamp (str): Timestamp of the message to add reaction to. e.g. '1234567890.123456'