def close_poll(
        self,
        chat_id: Union[int, str],
        message_id: id
    ) -> bool:
        """Use this method to close (stop) a poll.

        Closed polls can't be reopened and nobody will be able to vote in it anymore.

        Args:
            chat_id (``int`` | ``str``):
                Unique identifier (int) or username (str) of the target chat.
                For your personal cloud (Saved Messages) you can simply use "me" or "self".
                For a contact that exists in your Telegram address book you can use his phone number (str).

            message_id (``int``):
                Unique poll message identifier inside this chat.

        Returns:
            On success, True is returned.

        Raises:
            :class:`RPCError <pyrogram.RPCError>` in case of a Telegram RPC error.
        """
        poll = self.get_messages(chat_id, message_id).poll

        self.send(
            functions.messages.EditMessage(
                peer=self.resolve_peer(chat_id),
                id=message_id,
                media=types.InputMediaPoll(
                    poll=types.Poll(
                        id=poll.id,
                        closed=True,
                        question="",
                        answers=[]
                    )
                )
            )
        )

        return True