private static boolean hasAllClasses(String... classNames) {
        for (String className : classNames) {
            try {
                Class.forName(className, false, ArmeriaConfigurationUtil.class.getClassLoader());
            } catch (Throwable t) {
                return false;
            }
        }
        return true;
    }
A collection of internal {@code HttpService}s and their {@code Port}s.
spring/boot3-autoconfigure/src/main/java/com/linecorp/armeria/spring/InternalServices.java