public static void setInstance(DisruptRestController instance)
  {
    if (!INSTANCE.compareAndSet(null, instance))
    {
      LOG.warn("Ignored because instance has already been set. Invoke resetInstance before setInstance again.");
    }
  }
@Test
  public static void testSetInstance()
  {
    DisruptRestController controller = EasyMock.createMock(DisruptRestController.class);
    DisruptRestControllerContainer.resetInstance();
    DisruptRestControllerContainer.setInstance(controller);
    Assert.assertSame(DisruptRestControllerContainer.getInstance(), controller);
  }