public void isInvalid() {
        ValidationResult validateResult = validate();
        if (validateResult.isValid()) {
            throwAssertionError(shouldBeInvalid(actual.getSystemId()));
        }
    }
public void isInvalid ( ) { ValidationResult validateResult = validate ( ) ; if ( validateResult . isValid ( ) ) { throwAssertionError ( shouldBeInvalid ( actual . getSystemId ( ) ) ) ; } }
Verifies that actual value is not valid against given schema

@throws AssertionError if the actual value is valid against schema