code: def load_from_stream(self, stream, container, **opts):
          
          root = ET.parse(stream).getroot()
          path = anyconfig.utils.get_path_from_stream(stream)
          nspaces = _namespaces_from_file(path)
          return root_to_container(root, container=container,
                                   nspaces=nspaces, **opts)
docs: :param stream: XML file or file-like object
          :param container: callble to make a container object
          :param opts: optional keyword parameters to be sanitized
  
          :return: Dict-like object holding config parameters