@Nonnull
    @Beta
    public JobConfig addCustomClasspaths(@Nonnull String name, @Nonnull List<String> paths) {
        throwIfLocked();
        List<String> classpathItems = customClassPaths.computeIfAbsent(name, (k) -> new ArrayList<>());
        classpathItems.addAll(paths);
        return this;
    }
@Test
    public void addCustomClasspaths() {
        JobConfig jobConfig = new JobConfig();
        jobConfig.addCustomClasspaths("test", newArrayList("url1", "url2"));
        jobConfig.addCustomClasspath("test", "url3");

        assertThat(jobConfig.getCustomClassPaths()).containsValue(
                newArrayList("url1", "url2", "url3")
        );
    }