def get_leaf_node_path_list(self, sep=os.path.sep, type_str=None):
        """Get paths for all leaf nodes for the tree rooted at this node.

        Args:
            sep: str
                One or more characters to insert between each element in the path.
                Defaults to "/" on Unix and "\" on Windows.

            type_str:
                SUBJECT_NODE_TAG, TYPE_NODE_TAG or None. If set, only include
                information from nodes of that type.

        Returns:
            list of str: The paths to the leaf nodes for the tree rooted at this node.

        """
        return [v.get_path_str(sep, type_str) for v in self.leaf_node_gen]