@Test
 public void testGetPresent() {
   long getTtl = _metadataRepo.getMetricTTL(AVAILABLE_ID);
   assertEquals("getMetricTTL returned value", AVAILABLE_TTL, getTtl);
 }
 @Test(expected = IllegalArgumentException.class)
 public void testGetNotPreset() {
   UOID id = new UOID();
   _metadataRepo.getMetricTTL(id);
   fail("Unexpected absence of IllegalArguemtnException");
 }