import org.eclipse.emf.ecore.EValidator;
import org.eclipse.emf.ecore.EcoreFactory;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.util.Diagnostician;
import org.eclipse.emf.ecore.util.EObjectValidator;
<BUG>import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.test.models.ppo.Item;</BUG>
import org.eclipse.emf.test.models.ppo.PPOFactory;
import org.eclipse.emf.test.models.ppo.PPOPackage;
import org.eclipse.emf.test.models.ppo.PurchaseOrder;

import org.eclipse.emf.ecore.EValidator;
import org.eclipse.emf.ecore.EcoreFactory;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.util.Diagnostician;
import org.eclipse.emf.ecore.util.EObjectValidator;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.util.EcoreValidator;
import org.eclipse.emf.test.models.ppo.Item;
import org.eclipse.emf.test.models.ppo.PPOFactory;
import org.eclipse.emf.test.models.ppo.PPOPackage;
import org.eclipse.emf.test.models.ppo.PurchaseOrder;
