@SafeVarargs
    static <T> Seq<T> seq(Optional<? extends T>... optionals) {
        if (optionals == null)
            return Seq.empty();
        
        return of(optionals).filter(Optional::isPresent).map(Optional::get);
    }
Wrap multiple <code>Optional</code>'s into a <code>Seq</code>.
jOOL/src/main/java/org/jooq/lambda/Seq.java