class LifecycleException extends Exception {

  public boolean isSevere() {
    return severe;
  }

  public  LifecycleException( boolean severe );
  public  LifecycleException( String message, boolean severe );
  public  LifecycleException( Throwable cause, boolean severe );
  public  LifecycleException( String message, Throwable cause, boolean severe );

}