@Override
    public void setRampUpPercent(long rampUpPercent) {
        Validate.isTrue((rampUpPercent >= 0) && (rampUpPercent <= 100), "rampUpPercent must be a value between 0 and 100");
        this.rampUpPercent = rampUpPercent;
    }
@Test(expected = IllegalArgumentException.class)
    public void testSetRampUpPercent_exceeds100() {
        sampler.setRampUpPercent(101);
    }