}
public static OperationTester newTester(TransformationPage page) {
OperationTesterFactory factory = newFactory();
InterchangeView view = page.getView();
DeployGate deployGate = new InterchangeDeployFacade(view).newDeployGate();
EntityPageDisplayer pageDisplayer = new ViewEntityPageDisplayer(view);
TestOperationService service = page.getTreeDataService().getTestOperationService();
OperationTester tester = factory.newTester(service, deployGate, pageDisplayer);
return tester;
}