public BackgroundJobServerConfiguration andServerTimeoutPollIntervalMultiplicand(int multiplicand) {
        if (multiplicand < 4) throw new IllegalArgumentException("The smallest possible ServerTimeoutPollIntervalMultiplicand is 4 (4 is also the default)");
        this.serverTimeoutPollIntervalMultiplicand = multiplicand;
        return this;
    }
@Test
    void isServerTimeoutMultiplicandIsSmallerThan4AnExceptionIsThrown() {
        assertThatThrownBy(() -> backgroundJobServerConfiguration.andServerTimeoutPollIntervalMultiplicand(3))
                .isInstanceOf(IllegalArgumentException.class)
                .hasMessage("The smallest possible ServerTimeoutPollIntervalMultiplicand is 4 (4 is also the default)");
    }