public static class TestStartable implements org.picocontainer.Startable {
		@Override
		public void start() {
			// empty
		}

		@Override
		public void stop() {
			// empty
		}
	}
	
	@Test
	public void testIsStartedShouldNotThrowOnNonStartedComponent() {
		DefaultPicoContainer cont = new DefaultPicoContainer();
		cont.as(CACHE).addComponent(TestStartable.class);
		ComponentAdapter<?> adapter = cont.getComponentAdapter(TestStartable.class);
		Cached cached = adapter.findAdapterOfType(Cached.class);

               // this line throws - instead of returning false
		assertFalse(cached.isStarted());
	}

public boolean isStarted() {
            // add this guardInstRef() line
            guardInstRef();
            return instanceReference.get().started;
        }