public static <T, U extends Comparable<? super U>> Collector<T, ?, Seq<T>> minAllBy(Function<? super T, ? extends U> function) {
        return minAllBy(function, naturalOrder());
    }
Get a {@link Collector} that calculates the <code>MIN()</code> function, producing multiple results.
jOOL-java-8/src/main/java/org/jooq/lambda/Agg.java