def METHOD_NAME(self, options):
    """ The options used for mounting.
       :param options: mount options
       :type options: str or NoneType
       :returns: the options used by the task
       :rtype: str
    """
    if not options or not isinstance(options, str):
        options = self.fs.mountopts or ",".join(self.options)
    return self._modify_options(options)