variadic function, query "in", help with syntax/function

Briefly, what would it take to make the following work?

create function getbatch (variadic ids int8[]) returns setof foobar as $$
begin
    return query
        select * from foobar where id in (ids);
end;
$$ language plpgsql;

--
Scott Ribe
scott_ribe@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice