@Override
  public List<PrivilegedOperation> reacquireContainer(ContainerId containerId)
      throws ResourceHandlerException {
    return null;
  }
@Test
  public void testReacquireContainer() throws Exception {
    ContainerId containerIdMock = mock(ContainerId.class);
    Assert.assertNull(cGroupsBlkioResourceHandlerImpl
        .reacquireContainer(containerIdMock));
  }