@Test
	public void testEmptyParameters()
			throws NoSuchMethodException {
		HibernateValidatorConfiguration config = Validation.byProvider( HibernateValidator.class ).configure();

		Validator validator = config
				.parameterNameProvider( new PrefixableParameterNameProvider( "param" ) )
				.buildValidatorFactory()
				.getValidator();

		Foo bar = new Bar( "" );

		assertNumberOfViolations(validator.forExecutables().validateParameters( bar, bar.getClass().getMethod( "getSource" ), new Object[]{} ), 0);
	}

                //this might be the case for parameterless methods
		if ( parameterValues == null || parameterValues.length == 0 ) {
			return Collections.emptySet();
		}