@Test
public void test_get_vm_spec_infos() throws Exception {

    MBeanHelper helper = new MBeanHelper(ManagementFactory.getPlatformMBeanServer());
    Map<String, String> attrs = helper.get(runtimeMXBean(), Arrays.asList("SpecName", "SpecVendor", "SpecVersion"));
    System.out.println(attrs);
    assertThat(attrs).containsKeys("SpecName", "SpecVendor", "SpecVersion");
}