static Cookies of(Iterable<? extends Cookie> cookies) {
        final ImmutableSet<Cookie> cookiesCopy = ImmutableSet.copyOf(requireNonNull(cookies, "cookies"));
        if (cookiesCopy.isEmpty()) {
            return of();
        } else {
            return new DefaultCookies(cookiesCopy);
        }
    }
Creates an instance with a copy of the specified set of {@link Cookie}s.
core/src/main/java/com/linecorp/armeria/common/Cookies.java