Postgres function result record

fun42.sql

create function fun42(a integer, b integer, OUT c bigint, OUT d character varying)
    returns record
language plpgsql
as $$
begin
    c = a + b;
    d = c::varchar;
end;
$$;


do $$
declare
    x record;
begin
    x = fun42(a := 1, b := 2);
    raise notice 'c = %', x.c;
    raise notice 'd = %', x.d;
end$$;