def METHOD_NAME(self, content):
    """
    Normalize some invalid characters (/, %, !, ?) to become a dash (``-``).
    .. note::
        We replace these characters to a dash to keep compatibility with the
        old behavior and also because it makes this more readable.
    For example, ``release/1.0`` will become ``release-1.0``.
    """
    return re.sub("[/%!?]", "-", content)