private void validateString(String element, String value) {
        validateNonNull(element, value, () -> validateNonEmpty(element, value, String::isBlank));
    }

    private <T> void validateCollection(String element, Collection<T> value, Consumer<T> validator) {
        validateNonNull(element, value, () -> {
            validateNonEmpty(element, value, Collection::isEmpty);
            value.forEach(validator);
        });

    }