public boolean isSevere() {
    return severe;
  }
@Test
  public void testThrowableMessageCtor() {
    Throwable t = mock( Throwable.class );
    exception = new LifecycleException( "message", t, true );
    assertEquals( t, exception.getCause() );
    assertEquals( "message", exception.getMessage() );
    assertTrue( exception.isSevere() );
  }