src/main/java/org/deephacks/tools4j/cli/Utils.java
static void validateOpts(Object instance) {
        if (!onClasspath(JSR303_1_0_CLASSNAME)) {
            return;
        }
        try {
            Object validator = getValidator();
            Method validate = validator.getClass().getMethod("validateOpts", Object.class);
            validate.invoke(validator, instance);
        } catch (InvocationTargetException e) {
            if (e.getTargetException() instanceof RuntimeException) {
                throw (RuntimeException) e.getTargetException();
            }
            throw new RuntimeException(e.getTargetException());
        } catch (RuntimeException e) {
            throw e;
        } catch (Throwable e) {
            throw new RuntimeException(e);
        }
    }
static void validateOpts(Object instance) {
        if (!onClasspath(JSR303_1_0_CLASSNAME)) {
            return;
        }
        try {
            Object validator = getValidator();
            Method validate = validator.getClass().getMethod("validateOpts", Object.class);
            validate.invoke(validator, instance);
        } catch (InvocationTargetException e) {
            if (e.getTargetException() instanceof RuntimeException) {
                throw (RuntimeException) e.getTargetException();
            }
            throw new RuntimeException(e.getTargetException());
        } catch (RuntimeException e) {
            throw e;
        } catch (Throwable e) {
            throw new RuntimeException(e);
        }
    }
Validate that the options if Bean Validation is available on classpath.