"""
        Call HF API to sign in a user and get a token if credentials are valid.

        <Tip>

        Warning: Deprecated, will be removed in v0.7. Please use
        [`HfApi.set_access_token`] instead.

        </Tip>

        Args:
            username (`str`):
                The username of the account with which to login.
            password (`str`):
                The password of the account with which to login.

        Returns:
            `str`: token if credentials are valid

        Raises:
            [`HTTPError`](https://2.python-requests.org/en/master/api/#requests.HTTPError) if credentials are invalid
        """