code: def chat_postEphemeral(self, *, channel: str, user: str, **kwargs) -> SlackResponse:
          
          kwargs.update({"channel": channel, "user": user})
          return self.api_call("chat.postEphemeral", json=kwargs)
docs: Sends an ephemeral message to a user in a channel.
  
          Args:
              channel (str): The channel id. e.g. 'C1234567890'
              user (str): The id of user who should see the message. e.g. 'U0BPQUNTA'
              text (str): The message you'd like to share. e.g. 'Hello world'
                  text is not required when presenting blocks.
              blocks (list): A dictionary list of blocks.
                  Blocks are required when not presenting text.
                  e.g. [{"type": "section", "text": {"type": "plain_text", "text": "Hello world"}}]