@Override
  public void setUp() throws Exception {
    super.setUp();

    pkg = EMFUtil.createEPackage("customTest", "ct", "http://cdo.emf.eclipse.org/customTest.ecore");
    EDataType custom = EcoreFactory.eINSTANCE.createEDataType();
    custom.setInstanceClass(CustomType.class);
    custom.setName("CustomType");

    pkg.getEClassifiers().add(custom);

    cls = EMFUtil.createEClass(pkg, "Foobar", false, false);
    att = EMFUtil.createEAttribute(cls, "att", custom);

    CDOUtil.prepareDynamicEPackage(pkg);
  }
  public EPackage createPackage() {
    EcoreFactory theCoreFactory = EcoreFactory.eINSTANCE;
    EcorePackage theCorePackage = EcorePackage.eINSTANCE;

    mapContainerEClass = theCoreFactory.createEClass();
    mapContainerEClass.setName("MapContainer");

    EPackage dynamicMapEPackage = createUniquePackage();
    dynamicMapEPackage.getEClassifiers().add(mapContainerEClass);

    EStructuralFeature name = theCoreFactory.createEAttribute();
    name.setName("name");
    name.setEType(theCorePackage.getEString());

    mapContainerEClass.getEStructuralFeatures().add(name);

    if (!isConfig(LEGACY)) {
      CDOUtil.prepareDynamicEPackage(dynamicMapEPackage);
    }

    return dynamicMapEPackage;
  }