if (value instanceof Entity) {
            data.register(key, BeanUtil.copyBeanToNewMap(value));
        } else {
            if ((value instanceof final Collection<?> coll) && !coll.isEmpty()) {
                // care performance for List that the most frequent pattern
                final Object first = coll instanceof List<?> ? ((List<?>) coll).get(0) : coll.iterator().next();
                if (first instanceof Entity) {

    /** The key of the message: Size of {item} must be between {min} and {max}. */
    public static final String CONSTRAINTS_Size_MESSAGE = "{constraints.Size.message}";

    /** The key of the message: {item} is invalid credit card number. */
    public static final String CONSTRAINTS_CreditCardNumber_MESSAGE = "{constraints.CreditCardNumber.message}";

    /** The key of the message: {item} is invalid {type} barcode. */