class AbstractMeta implements IChanged, IUndo, IVariables, IEngineMeta, INamedParams, IAttributes, ILoggingObject {

  @Override
  public boolean hasChanged() {
    if ( changedFlag.hasChanged() ) {
      return true;
    }
    if ( haveNotesChanged() ) {
      return true;
    }
    return false;
  }

}