Add a comment to hash table before saving to disk. You can add as many
comment lines as you like. These comment lines are discarded when loading
the file. If you use a null format, all comments are deleted.

def comment(self, format, *args):
        """
        Add a comment to hash table before saving to disk. You can add as many
comment lines as you like. These comment lines are discarded when loading
the file. If you use a null format, all comments are deleted.
        """
        return lib.zhashx_comment(self._as_parameter_, format, *args)