@Test public void testIsInessential() throws Exception { Task<?> task = execManager.submit(TaskBuilder.<Object>builder() .body(Callables.<Object>returning("val")) .build()); assertFalse(TaskPredicates.isInessential().apply(task)); BrooklynTaskTags.setInessential(task); assertTrue(TaskPredicates.isInessential().apply(task)); } }