public void commitVersions() {
        this.jobVersioners.forEach(JobVersioner::commitVersion);
    }
@Test
    void testJobListVersionerOnCommitVersionIsIncreased() {
        // GIVEN
        Job job1 = aScheduledJob().withVersion(5).build();
        Job job2 = aScheduledJob().withVersion(5).build();

        // WHEN
        JobListVersioner jobListVersioner = new JobListVersioner(asList(job1, job2));
        jobListVersioner.commitVersions();

        // THEN
        assertThat(job1).hasVersion(6);
        assertThat(job2).hasVersion(6);
    }