def METHOD_NAME(self, conf: ConfigTree) -> None:
    """
    Initializing FsNeo4jCsvLoader by creating directory for node files
    and relationship files. Note that the directory defined in
    configuration should not exist.
    :param conf:
    :return:
    """
    conf = conf.with_fallback(FsNeo4jCSVLoader._DEFAULT_CONFIG)
    self._node_dir = conf.get_string(FsNeo4jCSVLoader.NODE_DIR_PATH)
    self._relation_dir = \
        conf.get_string(FsNeo4jCSVLoader.RELATION_DIR_PATH)
    self._delete_created_dir = \
        conf.get_bool(FsNeo4jCSVLoader.SHOULD_DELETE_CREATED_DIR)
    self._force_create_dir = conf.get_bool(FsNeo4jCSVLoader.FORCE_CREATE_DIR)
    self._create_directory(self._node_dir)
    self._create_directory(self._relation_dir)