Generate ofName() and ofValue() for enumerations

        /**
         * Return the enumeration member whose {@link #getName()} matches specified value.
         *
         * @param name YANG assigned name
         * @return corresponding Simple item, if present
         * @throws NullPointerException if name is null
         */
        public static Optional<Simple> forName(String name) {
            return Optional.ofNullable(NAME_MAP.get(Objects.requireNonNull(name)));
        }

        /**
         * Return the enumeration member whose {@link #getIntValue()} matches specified value.
         *
         * @param intValue integer value
         * @return corresponding Simple item, or null if no such item exists
         */
        public static Simple forValue(int intValue) {
            return VALUE_MAP.get(intValue);
        }

        public static @NonNull Simple ofName(String name) {
            return CodeHelpers.checkEnum(forName(name), name);
        }

        public static @NonNull Simple ofValue(int intValue) {
            return CodeHelpers.checkEnum(forValue(intValue), intValue);
        }