def load_from_string(self, content, container, **opts):
        """
        Load config from XML snippet (a string 'content').

        :param content:
            XML snippet string of str (python 2) or bytes (python 3) type
        :param container: callble to make a container object
        :param opts: optional keyword parameters passed to

        :return: Dict-like object holding config parameters
        """
        root = ET.fromstring(content)
        if anyconfig.compat.IS_PYTHON_3:
            stream = BytesIO(content)
        else:
            stream = anyconfig.compat.StringIO(content)
        nspaces = _namespaces_from_file(stream)
        return root_to_container(root, container=container,
                                 nspaces=nspaces, **opts)