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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def revoke_token(self, token, token_type=None):
 """Ask Reddit to revoke the provided token. :param token: The access or refresh token to revoke. :param token_type: (Optional) When provided, hint to Reddit what the token type is for a possible efficiency gain. The value can be either ``access_token`` or ``refresh_token``. """

        data = {"token": token}
        if token_type is not None:
            data["token_type_hint"] = token_type
        url = self._requestor.reddit_url + const.REVOKE_TOKEN_PATH
        self._post(url, success_status=codes["no_content"], **data)