Function pgrx_pg_sys::create_gather_merge_path

pub unsafe fn create_gather_merge_path(
    arg_root: *mut PlannerInfo,
    arg_rel: *mut RelOptInfo,
    arg_subpath: *mut Path,
    arg_target: *mut PathTarget,
    arg_pathkeys: *mut List,
    arg_required_outer: Relids,
    arg_rows: *mut f64
) -> *mut GatherMergePath