pub unsafe fn create_append_path(
    arg_root: *mut PlannerInfo,
    arg_rel: *mut RelOptInfo,
    arg_subpaths: *mut List,
    arg_partial_subpaths: *mut List,
    arg_pathkeys: *mut List,
    arg_required_outer: Relids,
    arg_parallel_workers: c_int,
    arg_parallel_aware: bool,
    arg_rows: f64
) -> *mut AppendPath